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(x1-x)/(x-x2)=-1 => x1=x2 又因为位置不用x1不等于x2 所以重心不存在 对不对?In Reply To:问一个问题: 一个质量为-1和一个质量为1的位置不同的两个点组成的系统的重心是不是不存在? Posted by:alpc117 at 2007-09-16 19:52:54 Followed by: Post your reply here: |
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