gc textbook chapter 8 Rotational Motion (id: d518b82e2)

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本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified

[问答题]
A person stands, hands2 equ5a, /+(yrdbcsubpp mg1fxlk/;igw)-pv.rd h)2 at his side, on a platform that is rotating at a rate of 1.3rev/s If he raises his arms to a horizontal position, Fig. 8–48, the speed of rotation decreases to 0xfl/ppg ;-)phvwmdr i1 .) 2gk.8 $rev/s$ (a) Why?
(b) By what factor has his moment of inertia changed?

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