Rotational Equilibrium (id: a8d385ee3)

本题目来源于试卷: Rotational Equilibrium，类别为 美国物理杯赛(Physics Bowl)

[单选题]
04.33: A uniform rectangular solid of side length Land width w si6tkx,o7v0m ; g qacgt(ts on9ym *ee-u,) e;ao anox+xi(yy a frictionles)u,-imyy na9xee ;*eox (ya +os incline of variable angle θ . Assume that there is a very tiny peg preventing the box from sliding down the incline at the point labeled P. At what angle of incline will the box begin to tip over?

A. $\theta =si{n}^{-1}\frac{W}{L}$
B. $\theta =co{s}^{-1}\frac{W}{L}$
C. $\theta =ta{n}^{-1}\frac{W}{L}$
D. $\theta =co{t}^{-1}\frac{W}{L}$
E. Values for w and L must be known.


参考答案:  D


本题详细解析: 暂无

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