本题目来源于试卷: Circular Motion，类别为 美国物理杯赛(Physics Bowl)
[单选题]
11.47: A simple pendu 1hqfj(yw6 7rw rbk3n1fcm ,,v)4t;pde* jgv jlum of length Lhasa point mass M released from rest from the horizontal position shown. In the absence of jtj; ep* gvd4) air resistance and friction, the mass swings through the arc of a circle. Let T represent the magnitude of the force from the string on the mass (tension), G represent the magnitude of the gravitational force acting on the mass by the earth, and F represent the magnitude of the net force acting on the mass. Which one of the following choices describes the relationship among these forces when the mass swings at the bottom of the arc (point P)?
A. $G < F < T$
B. $F < G = T$
C. $F < G < T$
D. $T < F < G$
E. $G = F < T$
参考答案: A
本题详细解析:
暂无
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