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 intzdi r-w w7jz,.6-ym kn63rxbp9f a9oc o the air to catch a ball and throw it qucbmfu/fw*f. . ickly. As he throws the ball, the upper part of his body rotates. If you look quickly yfbfu ./cm*w.f ou will notice that his hips and legs rotate in the opposite direction (Fig. 8–36). Explain.
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