gc textbook chapter 8 Rotational Motion (id: d72956442)

admin

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 the9 vlc iws). +r6g8gwfj air to catch a ball and throw it quickly. u g.bzd;co4e c4 jlp84As he throws the ball, the upper part of his body rotates. If you look b.cg 4uel4j z8c4 odp;quickly you 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