本题目来源于试卷: Rotational Equilibrium，类别为 美国物理杯赛(Physics Bowl)
[单选题]
16.43: A uniform beam c wwib q9y .eay6d 9yol , k4x+-raa)cy4o o4akna o+ xn 4u-l0wkix4.f8u -cr)-y9 plit hnnected to a wall at the hinge is in static equilibrium as shown. The cable connected to the beam is massless. What are the directions of the horizontal and vertical components ol4- 4r wu+x)ac9l n-kiy phuf4 it-8n0kx.oa of force acting at the pivot on the beam?
 
A.
B.
C.
D.
E.
参考答案: C
本题详细解析:
暂无
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