gc textbook chapter 8 Rotational Motion (id: d518b82e2)

admin

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

[问答题]
A person stands, hands at dh/ u) f-d:qkjhis side, on a platfor5dg+vq(uxj nx;6:l k wm that is rotating at a rate of 1.3rev/s If he rqu+jwk( l:xn6gx 5 vd;aises his arms to a horizontal position, 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?

参考答案:



本题详细解析: 暂无