4. There are two disks: one (A) an engine flywheel, and the other (B) a clutch plate Attached to a transmission shaft. Their moments of inertia are l and Ig: initially, they are rotating with constant angular speeds wa and wB, respectively. We then push the disks together with forces acting along the axis, so as not to apply any torque on either disk. The disks rub against each other and eventually reach a common final angular speed a. Derive an expression for w. Find th

4. There are two disks: one (A) an engine flywheel, and the other (B) a clutch plate Attached to a transmission shaft. Their moments of inertia are l and Ig: initially, they are rotating with constant angular speeds wa and wB, respectively. We then push the disks together with forces acting along the axis, so as not to apply any torque on either disk. The disks rub against each other and eventually reach a common final angular speed a. Derive an expression for w. Find th

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

Question

4. There are two disks: one (A) an engine flywheel, and the other (B) a clutch plate
attached to a transmission shaft. Their moments of inertia are I and Ig: initially, they
are rotating with constant angular speeds wa and wB, respectively. We then push the
disks together with forces acting along the axis, so as not to apply any torque on either
disk. The disks rub against each other and eventually reach a common final angular
speed
a. Derive an expression for w.
b. Find the final angular speed w after disks are pushed into contact, What
happens to the kinetic energy during this process? (Given In Figure 1: flywheel
A (2.0 kg), a radius of 0.20 m, and an initial angular speed of 50 rad/s (about
500 rpm) and that clutch plate B (4.0 kg), a radius of 0,10 m, and an initial
angular speed of 200 rad/s.
BEFORE
Forces Fad-F e siong the ais uf il
and thus exyà lrgie ahi this a
either disk
AFTER

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