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 heavy boy and a light girl are balancpgb zojz*. ut 4(pjn-+ed onur1 j,, tb(qy iuvkn1y 2651ordgyqn; a massless seesaw. If they both move forward so that they are one-half their original distance fry2;, qtb dn1urj(n15qy i6guvyk,1 room the pivot point, what will happen to the seesaw?
A. The side the boy is sitting on will tilt downward.
B. The side the girl is sitting on will tilt downward.
C. Nothing, the seesaw will still be balanced.
D. It is impossible to say without knowing the masses and the distances.
参考答案: A
本题详细解析:
暂无
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