本题目来源于试卷: Physics Unit9: Static Equilibrium, Elasticity and Fracture，类别为 国际高中通用物理
[单选题]
A boy and a girl are balanced on a massless se 1(xh fhiptor1x.hsfg8;.( it.oex 3l esaw. The boyjfbm//k -if7 m r xzu+:qj.p.vbh+)wyb*y n*s has a mass of 75 kg and the girl's mass is 50 kg. If the boy sits 2.0 m from the pivot point on one side of the seesaw, where must the girl sit on the/-/fb)pjfyy*+: bi k*bn+xqsrwjuz7h m mv .. other side?
A. $1.3 \; m$
B. $2.3 \; m$
C. $2.5 \; m$
D. $3.0 \; m$
参考答案: D
本题详细解析:
暂无
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