本题目来源于试卷: Physics Unit9: Static Equilibrium, Elasticity and Fracture，类别为 通用国际物理
[单选题]
A boy and a girl are balanxz/z lrvkht /f3 j*;a.ced on agj 2/1ofi4)7tbpc-hkf ( d3rqr4-c fczyi r .l massless seesaw. The boy has a mass of 75 kg and the girl's m. d4j 3 f- clgbzc y2kq7itcrr(/h-frfpi4 1o)ass 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 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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