解答下,谢谢,求解?
yy1122aa
yy1122aa Lv.11
2021年04月27日 11:29:08
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vikinson
2021年04月29日 17:13:09
2楼

p*a*sin35°=F(a b) ,求出p,p3=psin35°,p2=pcos35°

p1的方向错了,p1=F*b/a


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cof1622595707756
2021年06月02日 09:48:25
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