作者chenkaihsu (胖子)
看板Physics
标题[题目] 角动量守衡
时间Wed Nov 26 22:03:20 2008
[领域]角动量守衡 (题目相关领域)
[来源] 普物习题 (课本习题、考古题、参考书...)
[题目]An asteroid of mass 1.4*10^5kg , traveling at a speed of 33 km/s relative to the
Earth, hits the Earth at the equator tangentially, and in the direction of
Earth's rotation.
Use angular momentum to estimate the percent change in the angular speed of
the Earth as a result of the collision.
find 变化量角速度/角度度
[瓶颈] (写写自己的想法，方便大家为你解答)
我的列式是 ((5小Mv+2MR角速度)/(2MR+5小MR)-2拍/86400)*86400/2拍
可是我算出来是0耶
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