To determine the moment of inertia of a flywheel we will have to consider a few important factors. Cotton string, stop watch, set square, meter rod and vernier calipers'. If two wheels have the same weight, but one has a radius 1" (15" to 17") bigger, the MOI of the bigger wheel will be nearly 30% higher. Angular momentum (definition, its conservation, Newton's second law for rotation) 9. The string is pulled for 0. Armature resistance 6. Browse other questions tagged angular-momentum rotational-dynamics conservation-laws moment-of-inertia or ask your own question. Moment of inertia I is defined as the ratio of the angular momentum L of a system to its angular velocity ω around a principal axis. In The Experiment, A Block Of Mass = 11. To verify the law of parallelogram of forces. Ok the experiment I did was finding the moment of inertia of flywheel. The block is released and is observed to fall 3 m in 4. 05 kg and R= 4cm. E f = flywheel kinetic energy (Nm, Joule, ft lb) I = moment of inertia (kg m 2, lb ft 2) ω = angular velocity (rad/s) Angular Velocity - Convert Units. Repeat the steps 2 through 8 for this new moment of inertia. Before starting the experiment, measure the rod's length and mass then calculate its moment of inertia. A flywheel is used to smooth out vibrations, add torque and to act as a form of inertia which is required on a 4 stroke engine to push the engine through the dead spots where the engine is not firing. If the total fluctuation of speed is not exceed to , the mass moment of inertia of the flywheel in is. ArtiÞcial Balancer Tight wire artists (funambulists) exhibit an astonishing capability of balance-keeping. a Flywheel. If you do the experiment with copper wire of same diameter as that of Brass wire, is. The review deals with drop impacts on thin liquid layers and dry surfaces. An energy storage system based on a flywheel (a rotating disk) can store a maximum of 4. Indicate which direction the gyroscopic couple will act. This paper analyzes the effects of time delay on the stability of the rotation modes for the magnetically suspended flywheel (MSFW) with strong gyroscopic effects. Flywheels are used to store angular momentum, which is angular velocity times the moment of inertia. Use these experiments to help students learn more about inertia while having fun. The beginning of this author's work with rotating objects began with moment of inertia measurements of constrained gyroscopes undergoing forced precession. Department Of Physics, St Pious X degree college,Nacharam WELCOME TO THE DEPARTMENT OF PHYSICS. In this experiment, the moment of inertia of flywheel is being studied by variating the point of mass of flywheel. 1 seconds, exerting a tension force on the top and causing it to spin starting from rest. The Moment of Inertia Apparatus MATERIALS 1 Table clamp 1 Weight hanger (mass 50g) 1 Long metal rod 1 Length of. In a lab experiment, a student brings up the rotational speed of a rotational motion apparatus to 30 rpm. If no axis is specified the centroidal axis is assumed. Moment of inertia of a Flywheel OBJECT: To determine the moment of inertia of a flywheel about its own axis of rotation. The moment of inertia of the flywheel and axle is I. A flywheel is used to smooth out vibrations, add torque and to act as a form of inertia which is required on a 4 stroke engine to push the engine through the dead spots where the engine is not firing. Find the moment of inertia of the table with the iron disk. However, putting a flywheel on a motorcycle is problematic --beginning with the fact that a flywheel is a wide object while a motorcycle is a narrow object. Physics 2107 Moments of Inertia Experiment 1 Read the following background/setup and ensure you are familiar with the theory required for the experiment. Learn how the distribution of mass can affect the difficulty of causing angular acceleration. PHYSICS LAB VIVA-QUESTIONS Torsional Pendulum: 1. The pdf file allows students to independently learn and practise the AQA A level Physics Engineering Moments of Inertia topic. Moment of Inertia 18. To determine the co-efficient of friction between wood and other surfaces. When speed of the flywheel turned down to a certain value on discharging, the kinetic energy cannot be recycled. c) Flywheels Flywheels are used in machines to accumulate and store energy. In a sonometer experiment, the string of length 'L' under tension vibrates in second overtone between two bridges. Moment of inertia aka angular mass or rotational inertia can be defined w. In this experiment, you can learn about then potantial energy, kinetic energy, moment of inertia and finally conservation of energy. In an experiment, a student brings up the rotational speed of a rotational motion appartatus to 30 rpm. This bending moment lies in the plane of rotation of the flywheel. The moments of inertia about the central axis depend on how the mass is distributed relative to the axis: IC >IB>IA. 45 kg-m 2 and 0. The string is pulled for 0. If the radius of the disk is 1. Determination of Moment of Inertia of Flywheel 10. Belt and Pulley Experiment 9. 1 KJ = 5100 J. The rotational inertial of the flywheel is. Measure the diameter of the masses. Widerange damper of torsional vibrations is a more complex mechanism. Moments or Torques The rotational analogue of force. The moment of inertia depends not only on the mass of an object, but also on its distribution of mass relative to the axis around which it rotates. The mass amount was changed and all masses were dropped from the same height. Plot the data and determine moment of inertia Inew from the slope. THEORY of MACHINES Questions and Answers pdf free download,objective type interview questions and answers,lab viva,online quiz,bits,test mcqs. Now to store the maximum amount, you need either a lot of angular velocity or a large moment of inertia. The flywheel of an engine consists essentially of a thin cast-iron ring of mean diameter 2 m. The students have to attempt first common question, which is compulsory, and one question from each of the four sections. To verify Lami’s theorem. Experiment: Determination of moment of Inertia of a Fly Wheel. w,a_igt)tS, According to. The question paper shall consist of eight questions. Can you please show me how to do it. What is Fermi level?. Impact Test 8. /sec)Calculate the maximum shear stress at the end of a vertical and horizontal diameter in a plane close to the flywheel. It can be used to calculate the value of the acceleration due to gravity (g) if the moment of inertia of the rod is calculated. Eight questions will be set up. This odd semester practical examination shall be conducted by Internal Examiner. So the axel will be mounted on ball bearings for the fixed support. —The Hammer. Department of Physics Physics Lab Viva Voce Questions and its answers Laser Parameters 1. Find an answer to your question While spinning down from 500. The greater the mass the object possesses, the more inertia that it has, and the greater its tendency to not accelerate as much. Inertia, property of a body by virtue of which it opposes any agency that attempts to put it in motion or, if it is moving, to change the magnitude or direction of its velocity. Repeat the steps 2 through 8 for this new moment of inertia. For this purpose, you may choose to use the Matlab GUI. BASIC VIVA QUESTIONS RELATED TO VARIOUS EXPERIMENTS. The flywheel is accelerated by the couple applied by the mass m. proved quite helpful apart for a question I didn’t find i. GENERAL PROGRAMME IN PHYSICS Viva- voce : 05 Marks c) Experiment : 10 marks To determine the Moment of Inertia of a Flywheel. Join us on Facebook. reading moving toward conflict, american issues a documentary reader questions, reading study guide growth in the west, chapter 12 reading guide chemistry Engineering Physics lab experiments Important Viva-Voce questions part-1 (Engineering Physics Lab. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. The flywheel consists of a heavy circular disc or wheel with a strong axle mounted on ball bearings on two fixed supports. : For example, imagine two flywheels like the one shown here, one made of aluminium (density about 2 70 0 kgm-3) and the other of lead, density about 1 1 30 0 kgm-3). If the body has a simple geometrical figure, e. Analyze: How is the moment of inertia related to the radius? Practice: The moment of inertia for a single object is given by the formula I = mr 2. I CM represents the object's moment of inertia about its center of mass h represents the perpendicular distance from P to the center of mass For our purposes, let P represent the point of contact where the rolling thin ring, cylinder, or sphere touches the incline's surface. The block is released and is observed to fall 3 m in 4. 2 will be short answer type of 5 marks. a) Determination of Mass moment of inertia of Fly wheel and Axle system. Elasticity: Relation between Elastic constants. element of length dx is given by A dx, and the mass dm of the element is pA dx. Polar moment of inertia: The geometric rigidity of the X-sec is termed as polar moment of inertia. Inertia Definition of Inertia: Inertia is the reluctance of a body to have its speed change. The string is pulled for 0. All the students finished the model building part and did the experiment with different level. Calculation of the flywheel's moment of inertia can be more easily analysed by applying various simplifications. 600 m radius) and has a total mass of 10,000 kg. She then allows the flywheel to slow down on its own and counts 85 revolutions before it comes to a stop. I did an experiment in school and we located the end of the cord on the pin, which is situated on the shaft of the flywheel. A large number of viva and objective type questions are also given. Experiment to find the shear centre of a C-section beam, 2. Rotational dynamics (torque and its definition, static equilibrium, kinetic energy) 8. Full text of "Vector Mechanics For Engineers Statics Edition 9 Beer, Johnston" See other formats. (2) Where I x is the Moment of Inertia about the axis (x), and A is the area. Epicyclic Gear Train 23. A flywheel acts to increase the moment of inertia of a pump, subsequently reducing the surges that occur when there is a s udden pump failure and preventing column separation. The string is pulled for 0. Co-efficient of Friction 25. viva_questions_physics_xi. Physics Lab Viva Questions Vtu Engineering Physics Lab Viva Questions Yeah, reviewing a ebook vtu engineering physics lab viva questions could amass your close connections listings. What do u mean by second moment of area? Answer. "Y" by bending of beam using optical lever method. The top has a moment of inertia of 1/4 MR^2 where M= 0. 5 kg-m 2 respectively. 400 m in radius, and a steady pull of 50. Bending Strength Test 4. property of body due to which it opposes the change in state in rotatory motion. In a sonometer experiment, the string of length 'L' under tension vibrates in second overtone between two bridges. Not all element types require real constants, and different elements of the same type may have different real constant values. A flywheel is used to smooth out vibrations, add torque and to act as a form of inertia which is required on a 4 stroke engine to push the engine through the dead spots where the engine is not firing. Note: Perform any one experiment from the following. 109 TOP Measurement and Instrumentation - Electrical Engineering Multiple choice Questions and Answers Latest Measurement and Instrumentation Questions and Answers List 1. , the opposition that the body exhibits to having its speed of rotation about an axis altered by the application of a torque (turning force). The outside diameter (OD)for the wheel is 2000 mm, and the inside diameter (ID) is 1840 mm as shown in the figure. [pic] The flywheel of an engine has moment of inertia 2. Motorized gyroscope – Study of gyroscopic effect and couple. Thus the total moment of inertia is:. But there is an additional twist. Exporters & Manufacturers of Laboratory Equipments since 1958, We are known for best qualityTo Verify Theorem Of Perpendicular , Study Moment Of Inertia With Variation , To Study Value Of Acceleration Due To Gravity-INSIF , To Study Center Of Gravity By Katers Pendulam-INSIF , To Study Time Period Of A Simple Pendulam , To Determine Simple Harmonic-Damping , Study of SIMPLE HARMONIC-DAMPING. engine flywheel rotates at 3000 rpm clockwise when viewed from the front. This video covers the viva-voce of flywheel experiment. What is the moment of inertia of the flywheel? 2. (a) The 60. Moment of Inertia A cylinder, a disk, and a ring with same mass. I did an experiment in school and we located the end of the cord on the pin, which is situated on the shaft of the flywheel. DC MOTOR DRIVES: Starting, Acceleration control, braking,. Viscosity of water by Capillary flow method. : For example, imagine two flywheels like the one shown here, one made of aluminium (density about 2 70 0 kgm-3) and the other of lead, density about 1 1 30 0 kgm-3). This is because the smaller the ratio of load inertia to motor inertia, the less compliance will affect the system. 7: A bus contains a 1500 kg flywheel (a disk that has a 0. When inertia is overcome, the weight of the flywheel keeps the motor running. The Nature of Circular Motion. The area moment of inertia is also called the second moment of area. Your gripping hand would have to exert a force of nearly 6000 lb on the ring to keep you from rotating about your hand. Widerange damper of torsional vibrations is a more complex mechanism. Make sure that. Practical 8: Flywheel Moment of Inertia September 19, 2018 Practical 8: Flywheel Moment of Inertia. She then allows the apparatus to slow down on its own,and counts 240 revolutions before the apparatus comes to stop. Every day, thousands of new job vacancies are listed on the award-winning platform from the region's top employers. The contribution to the overall moment of inertia of the flywheel is dominated by the outer cylinder, whose mass is 3 kg. Strength of materials, also called mechanics of materials, is a subject which deals with the behavior of solid objects subject to stresses and strains. Suranaree University of Technology. Determination of "g" and radius of gyration by Bar Pendulum. True or false: A quick way of computing the moment of inertia of a body is to consider its mass as being concentrated at the center of mass. To study charging and discharging of a condenser through a resistor R. Engineering Mechanics LAB VIVA Questions and Answers pdf free download for cse,VIVA Questions with Answers,online test,quiz,mcqs,interview questions. Specifically, it is the second moment of mass with respect to the orthogonal distance from an axis (or pole). Find the moment of inertia of the empty rotating table. 1×104 revolutions per minute. In mathematical notation, the moment of inertia is often symbolized by I, and the radius is symbolized by r. Thread / Post : Tags: Title: viva question and answer on flywheel experiment Page Link: viva question and answer on flywheel experiment - Posted By: Guest Created at: Sunday 07th of April 2019 07:15:46 PM: carey foster bridge experiment related viva questionrey foster bridge experiment related viva question, newton ring experiment viva question with answer, relay and hv lab viva question and. 67 M; However, Because Of Its Nonstandard Geometry Its Moment Of Inertia About Its Center Of Mass Must Be Determined Experimentally. 4J, what is the average torque exerted by the string as it’s being pulled?. The moment of inertia of the cross arm my group measured with the conservation of energy equation is: 0. Flywheels have an inertia called the moment of inertia and thus resist changes in rotational speed. The basic relationship between moment of inertia and angular acceleration is that the larger the moment of inertia, the smaller is the angular acceleration. The torque is: τ = Iα. The speed fluctuation is limited to 2% of mean speed. State of Stress. Experiment on Trusses 11. 1, December 23, 1997 Page 1 EXPERIMENT: MOMENT OF INERTIA OBJECTIVES : 1. Compression Test 3. When the mass is twisted about the axis of the wire, the wire exerts a torque on the mass, tending to rotate it back to its original position. She Then Allows It To Slow Down On Its Own, And Counts 240 Revolutions Before The Apparatus Uniformly Comes To A Stop. Moment of inertia is the resistance shown by an object to change its rotation. Find the moment of inertia of the empty rotating table. The central layer being the axes of rotation. THEORY : A simple pendulum consists of a small body called a "bob" (usually a sphere) attached to the end of a string the length of which is great compared with the dimensions of the bob and the mass of. The crank shaft of the machine is geared to the motor shaft. Epicyclic Gear Train 23. UG Lab-2 is mainly equipped with Mechanics & Electricity and magnetism experiments such as Determination of Moment of Inertia of a Fly Wheel, Acceleration due gravity by Bar Pendulum, Frequency of A. pdf: File Size: 531 kb: File Type: pdf: Download File. An old fashioned too has a string wrapped around it at a radius of 2cm. THEORY : A simple pendulum consists of a small body called a "bob" (usually a sphere) attached to the end of a string the length of which is great compared with the dimensions of the bob and the mass of. The radius of the axie of the flywheel can be measured with a caliper. Since mass is a measure of the inertia of a body we might reasonably expect the moment of inertia of a body to depend on the mass. (write your answer by Question 2-1 for reference during the lab) 4. It is mounted on a rod of negligible mass, which is supported at one end by a frictionless pivot attached to a vertical post, as shown in the diagram. 900-m-long arms which are 3. Determination of frequency of A. 0850 kg ? m2. 4 Define moment of inertia and mention the units of moment of inertia. When determining the moment of inertia along an axis, we generally consider the “base” as the distance across the x-axis, and the “height” as the vertical distance, along the y-axis. She then allows the apparatus to slow down on its own,and counts 240 revolutions before the apparatus comes to stop. The purpose of the experiment to be described is the determination of one of the properties of an od field. Flywheel moment of inertia experiment, 3. It is collection of the most important questions to be asked for this experiment. The STEM information behind this section is the rotational moment of inertia and the gearbox system. Calculate the moment of inertia of the flywheel and find the change in speed of the flywheel if a constant torque of 110 Nm acts on it for 5 seconds. Moment of Inertia formula Derivation The physical object is made up of small particles. Table of moments of inertia of most common bodies: Hollow cylinder (mass m, radius r) I = mr 2 Solid cylinder I = ½mr 2. One can define the moment of inertia as the ratio of the angular moment to the angular velocity of the particular object moving at its principal axis. Chapter 10 Rotational Kinematics and Energy Q. Measure the diameter of the masses. Moments of inertia simply add, so:. To determine the moment of inertia of a flywheel we will have to consider a few important factors. Teacher Resource Bank / GCE Physics A / A2 Scheme of Work / Version 1. Flywheel is a device for storing large quantities of energy. Understanding the Relationship between Moment of Inertia (dependent variable) with Added Mass and Distance of Mass from Pulley (independent variables) on a Rotating Rod By: Rachel Scheidt Lab Partners; Cora Flath and Anthony DiNizo Experiment Conducted on June 9th, 2016 In this experiment a rotating rod mounted to a surface rotates due the force of a falling mass. pdf: File Size: 531 kb: File Type: pdf: Download File. A bar magnet of magnetic moment m and moment of inertia I (about centre, perpendicular to length) is cut into two equal pieces, perpendicular to length. Repeat the steps 2 through 8 for this new moment of inertia. Imagine that it has the same total mass as the one above. A mass is attached by a string to the axle which has a radius of 37. It emits laser light when it is forward biased. torque = force * r = 16. To study charging and discharging of a condenser through a resistor R. To determine the moment of inertia of a flywheel about its own axis of rotation. I solved 21,300 rev/min to be equal to. Experiments with ßywheel: c. a Flywheel. 1 RADIUS OF GYRATION k All rotating machinery such as pumps, engines and turbines have a moment of inertia. Moment of Inertia, Version 1. VIVA QUESTIONS AND ANSWERS. Moment of inertia of a Flywheel OBJECT: To determine the moment of inertia of a flywheel about its own axis of rotation. In the International System (SI), m is expressed in kilograms and r in metres, with I (moment of inertia) having the dimension kilogram-metre square. potential and kinetic energy kit This kit includes a pendulum, a spring and a flywheel for experiments in potential and kinetic energy. What is the retarding torque on the flywheel?. Moment of Inertia The moment of inertia of a rigid body is defined by I = Úr2 dm where integration goes through all the mass elements of the body and r is the distance of mass element dm from the axis. 75 kg each and extend straight out from the. Magnetic Flywheel working principle New Invention in The Experiment based on moment of inertia by IIT kanpur. If the moment of inertia of an object about an axis of rotation that passes through its center of mass (COM) is known, then the moment of inertia of this object about any This questions can be answered using Eq. viva question answer of flywheel experiment pdf Aim: To determine the moment of inertia of a flywheel. Video Prepared by : Experiment. The flywheel consists of a heavy circular disc or wheel with a strong axle mounted on ball bearings on two fixed supports. in the second example it is not. Brinell Hardness Test 6. The pressure for both A flywheel consists of a solid cylinder, with a small radial axle protruding from its centre. Investigation of the laws of vibration of stretched strings by sonometer or electromagnetic method. A string of length h is wrapped round the axle with a mass m tied to the end (Figures 1 and 2). Viva Questions For Four Probe Experiment, four probe experiment viva questions,. (Fourth semester) Mechanical engineering. Angular Equations of Motion Angular equations of motion describe a body's rotational motion over time. 1, describe briefly the steps you take to make sure your apparatus setup is done correctly and the timer is working properly. The mass is adjusted until its weight is just sufficient to overcome frictional resistance and rotate the flywheel without acceleration. The arm may be assumed as a cantilever fixed at the hub and carrying the load at the rim end. What is the objective of the gyroscope experiment? Draw a schematic of the experiments showing axis of precession and axis of rotation. If you do the experiment with copper wire of same diameter as that of Brass wire, is. Originally published by: Simularity Institute 3 May 1977 Bruce E. click here. Well in mechanical terms, a flywheel puller is a tool you would use to pull a flywheel off from a crankshaft or rotating assembly. Suppose the flywheels are called 'A' and 'B': from conservation of momentum for flywheel A you have: mrv_1 = I v_2/r + mrv_2 and for B:-mrv_1 = -I v_2/r - mrv_2 where 'm' is the mass of the canon ball, v_1 is the initial velocity of the canon ball, I is the moment of inertia for the flywheel, and r is the radius of the flywheel. Its moment of inertia about its axis is. W = F θ r = T θ (2) where. Moment Of Inertia Lab Report Conclusion. Practical - Applied Physics 1 1st Year Applied Physics 1 December 07, 2016. VIVA VOCE QUESTIONS 1. Moment of Inertia of. The moment of inertia of the flywheel is 0. Thus flywheel controls the fluctuations of speed during each. Table of Contents 1. Balance-keeping as a feedback loop B. The moment of inertia depends not only on the mass of an object, but also on its distribution of mass relative to the axis around which it rotates. (aCalculate the moment of inertia of the flywheel. When inertia is overcome, the weight of the flywheel keeps the motor running. 50 Experiment 9: Moments of Inertia Advance Reading Text: Torque, Rotational Motion, Moment of Inertia. 4, then the torque is maximum when is 90 and The flywheel of a stationary exercise. of the area from that axis is known as second moment of area. until the flywheel comes to rest. What is Fermi level?. To do this, I have the following setup: In this experiment I change the distance between the centre of the rotating disc and the central axis. Answer all questions. Measure the diameter of the masses. 8'4'2 D) 6'2'6 6. Strength of Materials and Failure Theories. 9 cm respectively, calculate an approximate value for the moment of inertia of the flywheel (all values are approximate, and may not. The moment of inertia of the flywheel and axle is I. Assume the frictional torque at the bearings is constant and the same as in question 02. The rotational inertia of an object is dependent on the mass the the arrangement of the mass within the object. Determine : 133 (a) power of the motor, and Flywheel (b) moment of inertia of the flywheel mounted on the motor shaft. pdf: File Size: 531 kb: File Type: pdf: Download File. Ambulation on balance beam. where: + Û è Õ - mass moment of inertia of the hub, + Ù ß ì - mass moment of inertia of the damper flywheel, G Ù ß ì - stiffness of elastic connector (torsional spring), / å : P ; - the reaction moment of the crankshaft. THE FLYWHEEL-18-The moment of inertia, I, is determined by imagining that the body is divided into a number of infinitesimal elements of mass /mi each at a distance ri from the axis of rotation. 67 M; However, Because Of Its Nonstandard Geometry Its Moment Of Inertia About Its Center Of Mass Must Be Determined Experimentally. "There's this mass on the back of the crank," Baty explained. This requires that the part be swung about any axis (other than one that passes through its CG) parallel to that about which the moment is sought and. The disc has a mass of 16 kg and a radius of 0·30 m. What is stopping potential? 07. The radius of the axie of the flywheel can be measured with a caliper. The crank shaft of the machine is geared to the motor shaft. The principle of. MCQ Practice Tests. Moment Of Inertia Lab Report Conclusion. In materials science, the strength of a material is its ability to withstand an applied load without failure. 125 kg-m^2, precisely equal in magnitude to the linear inertia of a 1 kg mass. $\endgroup$ – Chuck ♦ May 26 '15 at 17:31 $\begingroup$ #1 is the image on the right (holding at the end), #2 is the image on the left. there is no. The paper presents the analysis of vibrations of the crankshaft system and proposition of its modelling. Which of the following disciplines provides study of inertia forces arising from the combined effect of the mass and the motion of the parts. If a string is wrapped around it and it is pulled with a force of 1 0 N then its angular velocity after 4 s will be. Angular Equations of Motion Angular equations of motion describe a body's rotational motion over time. The string is pulled for 0. Flywheels resist changes in their rotational speed, which helps steady the rotation of the shaft when a fluctuating torque is exerted on it by its power source such as a piston-based (reciprocating) engine, or when an intermittent load, such as a piston pump, is placed on it. It is used to determine the moment of inertia. To study the Characteristics of a Series RC Circuit. Practical Exam Young's Modulus - Viva Voice Question With Answer For: Science Class 11 | Physics. If the final rotational kinetic energy of the spinning top is 0. Friction and drag slowing a flywheel (an Observation experiment) The moment of inertia of a flywheel It may also have specific questions for you to answer and. c) Determination of Mass Moment of Inertia using bifilar suspension and compound pendulum. The string is pulled for 0. Answer: For small oscillations about the horizontal the torque produced by the weight of the object acting on a moment arm. Measuring the Moment of Inertia of a Flywheel. It depends on the body's mass distribution and the axis chosen, with larger moments. 5kgm 2 (c) 2. In the experiment, a flywheel was mounted on a bench and a piece of string was wrapped round the axle, then over a pulley and masses were hung from the other end of the string. For example, the moment of inertia of a solid cylinder of mass M and radius R about its axis of symmetry is ½MR 2. The distance between the center of the wheel and the pivot is d. ) (bA mass is attached to the flywheel by a light string as shown in Figure 1B. Co-efficient of Friction 25. The moment of inertia of a body depends on the mass of a body and the distribution of the mass relative to the axis of rotation. During the experiments, the variable inertial force generated by the variable inertia flywheel in response to the changes in the excitation inputs is in good agreement with the prediction of the. The impacts resulting in crown formation are referred to as splashing. Apparatus: Flywheel, two weights of about 300 and 200 gm. There is a little peg on the axle. 5 kg, has a 0. 1, December 23, 1997 Page 1 EXPERIMENT: MOMENT OF INERTIA OBJECTIVES : 1) To familiarize yourself with the concept of the moment of inertia, I, which plays the same role in the description of the rotation of the rigid body as the mass plays in the description of its steady motion. Conversely, if κ is known, the moment of inertia I can be determined from measurements of T, (10) I T =κ π 2 4 2. The extra energy is stored during the idle stroke of the driven machinery and released during the working stroke. To design double shoe brake 3. You will likely have to take some time to work through them. Ask question + 100. What is meant by Rigidity modulus? 10. The flywheel consists of a heavy circular disc or wheel with a strong axle mounted on ball bearings on two fixed supports. Circular Section: For Hollow Shaft:. by Sono-meter and Electromagnet, Voltage Doubler & Tripler circuits etc. 50m about its centriodal axis is (a) 1. To verify Lami’s theorem. Torque Lab Torque Lab. The radius of the axie of the flywheel can be measured with a caliper. 04 MOMENT OF INERTIA OF FLYWHEEL Aim: To find moment of inertia of flywheel Apparatus: Flywheel mounted on axle and supported by bearing, pan, weights, and stop watch. A flywheel of moment of inertia 0. How to find Moment about a particular point in Parallel Force System 10. If the radius of the wire is doubled, what happens to the moment of inertia? 5. Measure the diameter of the masses. Ok the experiment I did was finding the moment of inertia of flywheel. 0002 kg-m 2 to 0. Question No. 2597 Views. Perform analysis of braking system for various vehicles. Title: Mass Moment of Inertia Objective: To determine mass moment of inertia of a part using experimental method. The string is pulled for 0. This is also known as the moment of inertia. Out of which first question shall be of short answer type (not exceeding 50 words) and will be compulsory. But there is an additional twist. In a lab experiment, a student brings up the rotational speed of a rotational motion apparatus to 30 rpm. Produce torque-angular acceleration graphs and determine rotational inertia experimentally. Moment of inertia of solid flywheel is. Flywheel moment of inertia experiment, 3. What is the retarding torque on the flywheel?. Newton's Second Law. PHYSICS VIVA QUESTIONS 1. 05 kg and R= 4cm. The gyroscope that is free to rotate about all the three axes is balanced in horizontal position with the help of a counter weight C as shown in Fig. Measurement of Moment of Inertia of fly wheel the bibash collections. Classical Mechanics-Rotational Motion Of Flywheels by LearnOnline Through OCW. The velocity of the falling mass at this instant is v and the angular velocity of the flywheel ω. Lab Viva Q/A. Calculating moments of inertia is fairly simple if you only have to examine the orbital motion of small point-like objects, where all the mass is concentrated at one particular point at a given radius r. But -- I have an interesting thought for you - Being you want to experiment. BASIC VIVA QUESTIONS RELATED TO VARIOUS EXPERIMENTS. a)What is the moment of inertia of the fly- wheel?. Note: In the semester examination, the examiner will set 8 questions, at least Two question from each unit, and students will be required to attempt only 5 questions one from each unit. 8'4'2 D) 6'2'6 6. Magnetic Flywheel working principle New Invention in The Experiment based on moment of inertia by IIT kanpur. The axle is mounted on ball bearings on two fixed supports. The block is released and is observed to fall 3 m in 4. hope this helps. 1, December 23, 1997 Page 1 EXPERIMENT: MOMENT OF INERTIA OBJECTIVES : 1. However, that begs the question is the flywheel effect all thats important in slot car performance?. Moment of Inertia formula Derivation The physical object is made up of small particles. W = F θ r = T θ (2) where. Epicyclic Gear Train 23. e of a flywheel and used for taking the car u. Viscous friction b. The objective is to find the moment of inertia of the gyroscope by measuring the precession frequency, as a function of the spin frequency of the gyroscope. The string is pulled for 0. 00924) and the calculated moment of inertia (0. ArtiÞcial Balancer Tight wire artists (funambulists) exhibit an astonishing capability of balance-keeping. A second flywheel, which is at rest and has a moment of inertia three times that of the rotating flywheel, is dropped onto it (Figure \(\PageIndex{3}\)). (a) If we decrease the pitch the L. Let T be the period of oscillations of the original magnet about an axis through the mid point, perpendicular to length, in a magnetic field B. The Procedure says, "It should be three passes. element of length dx is given by A dx, and the mass dm of the element is pA dx. 05 kg and R= 4cm. What are some of the viva questions on the moment of inertia of a flywheel (physics)? The atoms comprising the wheel can be regarded as being in concentric circular layers. Method: (1) Make a small loop at one end of the string and put it round the peg P, on the scale of the flywheel. The top has a moment of inertia of 1/4 MR^2 where M= 0. Now connect the load disk and inertias to the previous stage using a connecting pulley. can i use the principle of Continuously Variable Transmission (CVT) to create a very efficient Flywheel? By this i mean, could i use the idea of a wheel with springs and weights that changes its moment of inertia at different angular velocities, to make a flywheel that would keep my small engine turning at top effieiency?. However, putting a flywheel on a motorcycle is problematic --beginning with the fact that a flywheel is a wide object while a motorcycle is a narrow object. The moment of inertia of body is defined as the measure of object's resistance to the changes of its rotation. T, Twisting moment. This is because the smaller the ratio of load inertia to motor inertia, the less compliance will affect the system. 4J, what is the average torque exerted by the string as it’s being pulled?. Find the moment of inertia of the table with the iron disk. 05 kg and R= 4cm. Understanding the Relationship between Moment of Inertia (dependent variable) with Added Mass and Distance of Mass from Pulley (independent variables) on a Rotating Rod By: Rachel Scheidt Lab Partners; Cora Flath and Anthony DiNizo Experiment Conducted on June 9th, 2016 In this experiment a rotating rod mounted to a surface rotates due the force of a falling mass. What are transverse waves?. The objective is to find the moment of inertia of the gyroscope by measuring the precession frequency, as a function of the spin frequency of the gyroscope. She then allows the apparatus to slow down on its own,and counts 240 revolutions before the apparatus comes to stop. 0002 kg-m 2 to 0. Energy is transferred to a flywheel by the application of a torque to it, thereby increasing its rotational speed, and hence its stored energy. there is no. DePalma Understanding the Dropping of the Spinning Ball Experiment. G, Modulus of rigidity. Question Paper Structure 1. Popular Searches: flywheel and typesof flywheel ppt, viva question and answer on flywheel experiment**, flywheel experiment viva questions, bmt lab viva question and answer, ec lav viva question and answer, sonometer experiment viva question and answer, carey foster bridge experiment related viva questionrey foster bridge experiment related viva question,. Teacher Resource Bank / GCE Physics A / A2 Scheme of Work / Version 1. Method: (1) Make a small loop at one end of the string and put it round the peg P, on the scale of the flywheel. 01055 kg/m2 (with the mass of 30g), which is kind of similar to the standard magnitude of the moment of inertia of the cross arm: 0. In this experiment you will use a wheel with a step pulley to measure the acceleration of the rotating wheel and determine the moment of inertia of the wheel. BASIC VIVA QUESTIONS RELATED TO VARIOUS EXPERIMENTS. Experiments with ßywheel: c. (Two questions are to be set from each unit with either or type) Section-B (Short answer type) Answer any three out of 5 questions from all units (I to V) Marks: 3 x5 = 15 At least one question should be set from each unit. Moment Of Inertia Lab Report Conclusion. E f = flywheel kinetic energy (Nm, Joule, ft lb) I = moment of inertia (kg m 2, lb ft 2) ω = angular velocity (rad/s) Angular Velocity - Convert Units. Students test each part to discover the difference between potential and kinetic energy and the transfer of energy from one form to another. Clutch Friction 20. com is the leading job site in the Middle East and North Africa, connecting job seekers with employers looking to hire. What is the objective of the gyroscope experiment? Draw a schematic of the experiments showing axis of precession and axis of rotation. PHYSICS LAB VIVA-QUESTIONS Torsional Pendulum: 1. The Procedure says, "It should be three passes. Apparatus: An iron axle, a heavy wheel, some ropes, a mass, stopwatch, meter scale, slide calipers. Find the moment of inertia of the table with the iron disk. what is the null point of a galvanometer. e of a flywheel and used for taking the car u. ) Tie a weight Mg at its other end. In materials science, the strength of a material is its ability to withstand an applied load without failure. If the moment of inertia of an object about an axis of rotation that passes through its center of mass (COM) is known, then the moment of inertia of this object about any This questions can be answered using Eq. 0 rad s-1 to zero. 7 Prepared by: Muhammad Hassam Q. Moment of Inertia formula Derivation The physical object is made up of small particles. 3 kJ of work. Remember, the "moment of inertia" is the 2nd moment (integral of dm*r^2 over the mass distribution), written in. Moment of inertia of solid flywheel is. -Experiment 8. For all the questions highlighted, the questions should be copied and pasted into the student’s lab report and explicitly answered immediately thereafter. Vtu Engineering Physics Lab Viva Questions Vtu Engineering Physics Lab Viva If you ally craving such a referred Vtu Engineering Physics Lab Viva Questions ebook that will provide you worth, get the categorically best seller from us currently from several preferred authors. Moment of Inertia. My attempt: 1. (Fourth semester) Mechanical engineering. zip) · Conservation of Energy II (EX-5512). hope this helps. Practical Exam Young’s Modulus – Viva Voice Question With Answer For: Science Class 11 | Physics. Theory: Theoretically, the rotational inertia, I, of a point mass is given by I = MR2, where M is the mass, R is the distance the mass is from the axis of rotation. Theory: If a part has been designed and built, its mass moment of inertia can be determined approximately by a simple experiment. Experiment on Trusses 11. Widerange damper of torsional vibrations is a more complex mechanism. Any other new proposals Date: 24 APRIL 2018 Chairman. (b) The skater with arms extended is approximately a cylinder that is 52. although only slightly different, it effects both uncoiling speed and rate of axel rotation. Just as inertial mass is the ratio of linear momentum to speed – its resistance to acceleration, in other words: Angular momentum in a closed system is, just like its linear counterpart, conserved. 1 KJ = 5100 J. Carefully I winded the cord onto the shaft, so that it is not ‘crossed over’ or trapped. It depends upon the. The moment of inertia of body is defined as the measure of object's resistance to the changes of its rotation. 4J, what is the average torque exerted by the string as it’s being pulled?. The STEM information behind this section is the rotational moment of inertia and the gearbox system. The Nature of Circular Motion. Procedure: 1) Spin the different flywheels with the drill and then let them go to spin down on their own. Formula used: The moment of inertia of a flywheel is given by following formula: π π = = π π ω= × ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ + − = ω ⎟⎟. Take measurements for at least 6 different r values spanning the length of the rod. Flywheels are used to store angular momentum, which is angular velocity times the moment of inertia. a) Determination of Mass moment of inertia of Fly wheel and Axle system. But there, only the top platform rotates and with the presence of ball bearings. The top has a moment of inertia of 1/4 MR^2 where M= 0. Determining the moment of inertia of a rod. This is a 2D state of stress – only the independent stress components are named. A simple rule of thumb is- the more compact an object's mass, the less rotational inertia an object will have. Make sure that. What constant torque is required to bring it up to an angular speed of 400 rev/min in 8s, starting from at rest? [pic] A solid, uniform cylinder with mass 8. APPARATUSREQUIRED Flywheel, Weights, String, Vernier Calipers, Meter scale and Stop watch. element of length dx is given by A dx, and the mass dm of the element is pA dx. Define moment of inertia. When inertia is overcome, the weight of the flywheel keeps the motor running. The motor driving the machine, however, has a speed of 1450 rpm and it delivers constant torque. Lab M4: The Torsional Pendulum and Moment of Inertia Introduction A torsional pendulum, or torsional oscillator, consists of a disk-like mass suspended from a thin rod or wire. He then allows the apparatus to slow down on its own, and counts 240 revolutions before the apparatus comes to a stop. Full text of "Vector Mechanics For Engineers Statics Edition 9 Beer, Johnston" See other formats. The Overflow Blog The Loop, June 2020: Defining the Stack Community. A flywheel is used to smooth out vibrations, add torque and to act as a form of inertia which is required on a 4 stroke engine to push the engine through the dead spots where the engine is not firing. Important Viva-Voce questions part-1 (Engineering Physics Lab. Assuming that frictional losses are negligible, show that the working angular speed of the flywheel is about 750rads–1. The use of _____ instruments is merely confined within laboratories. dx, and the moment of inertia of the entire rod is. Students use this pdf file on iPads/ tablets/ laptops. You may also be able to help others by answering some of the questions on the site. Calculate the moment of inertia of a skater given the following information. Measurement of ‘g’ using compound pendulum. 5 kg-m 2 respectively. Compound pendulum experiment. Teacher Resource Bank / GCE Physics A / A2 Scheme of Work / Version 1. 1 LAB MANUAL FOR THE MACHINE DESIGN-II LAB (Code No. Determination of "g" and radius of gyration by Bar Pendulum. Which one has the greatest moment of inertia when rotated about an axis perpendicular to the plane of the drawing at point P? A) A B) B C) C D) D E) The moment of inertia is the same for all of these objects. Moment of inertia is also termed as the second moment of mass and is denoted by I. 2 m , mass 20 kg), it was allowed to roll (from rest) down a 10 degree incline for a distance of 10 metres, the elapsed time was 5 seconds, rolling resistance is guessed at 5. Investigation of the laws of vibration of stretched strings by sonometer or electromagnetic method. 0 rpm to rest, a solid uniform flywheel (Disk) does 2. The flywheel rotor of the the. Load cell experiment, 6. I record the time for 5 complete rotations and use this to calculate the moment of inertia. Theory Considering a falling mass, Net force=mg-F Acceleration=a Hence ma=mg-ma F=m(g-a) Provided that a is much greater than g. b) Determination of Mass Moment of Inertia of axisymmetric bodies using Turn Table apparatus. mains using sonometer and an electromagnet. This bending moment lies in the plane of rotation of the flywheel. —The Punching Machine. The review begins with an explanation of. Specifically, it is the second moment of mass with respect to the orthogonal distance from an axis (or pole). Department of Physics Physics Lab Viva Voce Questions and its answers Laser Parameters 1. 2:Mechanics 1. 4 K g / m 2 and radius 0. 4J, what is the average torque exerted by the string as it’s being pulled?. This is also known as the moment of inertia. As shown in Figure 16. 67 M; However, Because Of Its Nonstandard Geometry Its Moment Of Inertia About Its Center Of Mass Must Be Determined Experimentally. Your hand has a moment arm of 2. Determination of Moment of Inertia of Flywheel 10. c) Determination of Mass Moment of Inertia using bifilar suspension and compound pendulum. by Melde’s apparatus/electric sonometer. The book explains theory and methodology of performing experiments about: " Mechanics " Strength of Materials " Materials Science The book also includes: " IC Engines " Steam Engines " Boilers " Steam Turbines " Water Turbines and Pumps Manufacturing. The Nature of Circular Motion. What are the precautions to be taken care of and what are the assumptions made while studying the mass spring system? 2. Impact Test 8. the moment of inertia of the flywheel is 0. is mounted on a shaft 3in. the question is then why does this make it inaccurate? the answer is because the speed of the string uncoiling from the axel is constant in the first example. What is Work function? 05. Measurements show that the flywheel makes 573 rotations as its angular speed reduces uniformly from 25. The axis may be internal or external and may or may not be fixed. It is used to determine the moment of inertia. 4J, what is the average torque exerted by the string as it’s being pulled?. (1) Determine the moment of inertia and angular acceleration of a flywheel. Dielectric constant physics lab experiment VTU 1st sem/2nd sem physics lab Dielectric constant experiment. Determining The Moment Of Inertia Of Flywheel. The Overflow Blog The Loop, June 2020: Defining the Stack Community. Its moment of inertia about its axis is. Theory: Theoretically, the rotational inertia, I, of a point mass is given by I = MR2, where M is the mass, R is the distance the mass is from the axis of rotation. 2 A student carries out an experiment to determine the moment of inertia of a turntable. Torque Lab Torque Lab. Flywheels are used to store angular momentum, which is angular velocity times the moment of inertia. So the axel will be mounted on ball bearings for the fixed support. Learn how the distribution of mass can affect the difficulty of causing angular acceleration. In this experiment, the moment of inertia of flywheel is being studied by variating the point of mass of flywheel. Physics dept St pious. generation flywheel modules. Moment of inertia aka angular mass or rotational inertia can be defined w. During the experiments, the variable inertial force generated by the variable inertia flywheel in response to the changes in the excitation inputs is in good agreement with the prediction of the. What is Fermi level?. Mass moment of inertia about polar and diametral axis is 2. When the mass is twisted about the axis of the wire, the wire exerts a torque on the mass, tending to rotate it back to its original position. 7 , we analyzed the motion of a block sliding down a frictionless incline. Suppose the flywheels are called 'A' and 'B': from conservation of momentum for flywheel A you have: mrv_1 = I v_2/r + mrv_2 and for B:-mrv_1 = -I v_2/r - mrv_2 where 'm' is the mass of the canon ball, v_1 is the initial velocity of the canon ball, I is the moment of inertia for the flywheel, and r is the radius of the flywheel. Question No. The top has a moment of inertia of 1/4 MR^2 where M= 0. I record the time for 5 complete rotations and use this to calculate the moment of inertia. The 1/2 is there because the mass close to the axis has less rotational inertia. In practice, the difference between kinematics and kinetics is the way of looking at the same machine or component. b) Determination of Mass Moment of Inertia of axisymmetric bodies using Turn Table apparatus. Questions/Conclusions 1. Find the moment of inertia of the table with the iron ring. The gyroscope that is free to rotate about all the three axes is balanced in horizontal position with the help of a counter weight C as shown in Fig.

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