作者sp012767 (还没想到...)
站内NDHU-Phy-SB
标题来玩个有趣的题目吧
时间Sun Dec 24 22:42:08 2006
题目如下:
Consider a baseall bat to be a uniform rod of L .
And the center of mass is L/4 of the center of length.
show that the distance d form the center at which the bat
should strike a ball to minimum the impact on the hands ?
This point is called center of percussion or "sweep spot"
Assume that the motion of the ball is perpendicular to the bat.
翻译:
有一支均匀球棒长L,质心位於棒子中心上方L/4处
计算-当球击中棒子中心上方d处时,最不震手,求d的值为何?
这个点称作"甜点"
假设球与棒子挥击为垂直,且棒子厚度不计
噗 普物真是太有趣.......
无聊来点小游戏吧 记得用甜点去打唷!!
http://www.tanrei.com/game/stadium/tanreistadium.swf
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1F：推 abcdef:同学要接受啊XD 12/24 23:56
2F：推 QQmickey:那棒子要从那开始看? 12/25 18:26
3F：推 sp012767:楼上在说啥? 12/25 22:03
4F：推 QQmickey:d= L/6 时手不震~来个正点的idea 12/26 17:14
5F：推 sp012767:楼上抄答齁~题目我改过了啦 噗噗 想偷鸡.... 12/26 19:38
6F：→ sp012767: 案 12/26 19:40