本题目来源于试卷: Rotational Equilibrium，类别为 美国物理杯赛(Physics Bowl)
[单选题]
17.42: A long uniform rod, piv ntgob3)qmo,czj33q ucww) 38 oted at one end affixe - 9l lj9v1ynrarn7)n od to the ground, is in static equilibrium A horizontal rope acts 75% of the way up the rod while a vertical rope acts at the 0far end. The magnitude of each rope’s force is the same as the gravitational force acting on the rod. What 1n99nrj-lnayvrl)7o is the value of the angle θ in the figure?
A. $18.4^{\circ}$
B. $21.8^{\circ}$
C. $33.7^{\circ}$
D. $36.9^{\circ}$
E. $45.0^{\circ}$
参考答案: C
本题详细解析:
暂无
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