本题目来源于试卷: Typical Forces，类别为 美国物理杯赛(Physics Bowl)
[单选题]
17.40: A small object of mass M is released from rest at the to rcjp7 x n9r.;sp of a f e:/wroj5tlt ,xy d,wh9m*xc1rictionless incline. The inclinehas a mass M and makes an angle θ with the horizontal. The incline remains at reston xr,9d cey w *tljx51 :hotw/m,a table as thesmall object slides. During the slide, what is the magnitude of the normal force from the table on the incline?
A. 2Mg (1 − tanθ)
B. 2Mg (1 − sinθ)
C. 2Mg
D. Mg (2 − $ sin^{2}$ θ )
E. Mg (2 − sin θ)
参考答案: D
本题详细解析:
暂无
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