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Re:弹性势能不会求…… E = k * (l-s)^2 /2

Posted by sunmoonstar_love at 2005-07-06 15:13:17 on Problem 2463
In Reply To:弹性势能不会求…… Posted by:Fukuphysics at 2005-07-06 15:12:27 
> 1不会公式，2不会求伸长量……
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