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 pendulum of lengt t8ee 8f6azso6 4-ck 6;e,higja msvt7 h Lhas hcb 1c7-mxa,g0 gek (rov6n5ca point mass M released from rest from the horizontal position shown. In the absence of air resistance and friction, the mass swings through the arc of a circle. Let T represent the magnitude of the fo ,m n7-ccack5be6or 10v(gxg hrce 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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