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gc textbook chapter 8 Rotational Motion (id: d518b82e2)

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Post time 2025-2-18 20:00:22 | Show all posts |Read mode
本题目来源于试卷: gc textbook chapter 8 Rotational Motion,类别为 unclassified

[问答题]
A person stands, hand;wm-oejujqijhy 27 8dy t614ns at 4d :f0w.hx vy buyg-(zhis side, on a platform that is rotating at a rate of 1.3rev/s If he raises his arms to a horizontal posdy(fgw bxyv0u :4-.hzition, Fig. 8–48, the speed of rotation decreases to 0.8 $rev/s$ (a) Why?
(b) By what factor has his moment of inertia changed?





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