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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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Question

A thin, light string is wrapped
around the outer rim of a uniform hollow
cylinder of mass 4.75 kg having inner
and outer radii as shown in Fig..
The cylinder is then released from rest.
(a) How far must the cylinder fall before
its center is moving at 6.66 m/s? (b) If
you just dropped this cylinder without
any string, how fast would its center be
moving when it had fallen the distance
in part (a)? (c) Why do you get two
different
answers when the cylinder
falls the same distance in both cases?

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