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 aijw1pc *+au2gj2 iwj 3cr to catch a ball and throw it qf-(l,xo gdxzz7f5yb8 uickly. As he throws the ball, the upper part of his body rotates. If you look quickly you will notice that his hips and legs rotay5lgf 8b,x(oxz -zf7dte 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
| 
Post time 2025-2-18 20:00:22