M Figure P11.61

University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter2: Vectors
Section: Chapter Questions
Problem 21CQ: What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c)...
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Question

A uniform solid disk of radius R is set into rotation with an angular speed ωi about an
axis through its center. While still rotating at this speed, the disk is placed into contact
with a horizontal surface and immediately released as shown in Figure P11.61. (a)
What is the angular speed of the disk once pure rolling lakes place? (b) Find the
fractional change in kinetic energy from the moment the disk Ls set down until pure
rolling occurs, (c) Assume the coefficient of friction between disk and surface is µ.
What is the lime interval after setting the disk down before pure rolling motion
begins? (d) How far does the disk travel before pure rolling begins?

M
Figure P11.61
Transcribed Image Text:M Figure P11.61
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