x+y=15
x-y=5
x=10 y=5 合力=根号下125
两个共点力的合力最大值为15牛,最小值为5牛,这两个力分别为多少?这两力夹角为90,合力为多少
两个共点力的合力最大值为15牛,最小值为5牛,这两个力分别为多少?这两力夹角为90,合力为多少
物理人气：878 ℃时间：2019-10-17 02:43:48
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