本题目来源于试卷: gc textbook chapter 8 Rotational Motion，类别为 unclassified
[问答题]
A shortstop may leap into thigr,tam,s7jzg vw1 .cn.0 q 2be air to catch a ball and throw it quickly. As he thv iq7r.wmntgj1a b0c,2 gz.s,e - 1-ljf*5whqc1ub jfrows the ball, the upper part of his body rotates. If you look quickly you will notice that his hips and legs rotate in the opposite direction (Fig. 8–36). ujc-qffh 1ej b-w*51 lExplain.
参考答案:
The
shortstop, while in mid-air, cannot exert a torque on himself, and so his
angular momentum will be conserved while in the air. If the upper half of his body rotates in a
certain direction during the throwing motion, then to conserve angular
momentum, the lower half of his body will rotate in the opposite direction.
本题详细解析:
暂无
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Post time 2025-2-18 20:00:22