本题目来源于试卷: Basic Concepts，类别为 美国物理杯赛(Physics Bowl)
[单选题]
10.23: A point object of mass M iwj 456z/ampbd t2e7nr( y6a,t5nwmxtv)k z e-s connected to the end of a long string of negligible mass and the system swings as a simple pendulum with period T. The point object of mass M is now replac(t, )ynv5-mzxa6ewt ked with a point object of mass 4M. When this new system swings as a simple pendulum, what is its period?
A. $T 4$
B. $2 T$
C. $T$
D. $T/2$
E. $T/4$
参考答案: C
本题详细解析:
暂无
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