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 the air t3mr1s 4k9v3(7nxw .qvg gxpuax+:inrkp c4h -o catch a ball and throw it quickly. As he wcfh6 ,ly5i)ecyb2n:throws 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 (F,few5 yc2:ichyn b l)6ig. 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
| 
Post time 2025-2-18 20:00:22