totally nonsense, please consider (1) initial v (2) rotating (3)

来源: 槑 于 2010-03-18 14:32:20 [] [博客] [旧帖] [给我悄悄话] 阅读数 : 0 (396 bytes)
本文内容已被 [ 槑 ] 在 2010-03-19 06:51:25 编辑过。如有问题，请报告版主或论坛管理删除.

if there is no initial velocity, the bear will not fall in the trap.

when it falls, it must stretch its legs, and struggle, then there will be rotating and vibrating, which will change the speed

most important, you cannot measure the time when it first touch the bottom, if you measure the center of the mass, then the distance will not be exactly 19.617米

not funny at all.

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