本题目来源于试卷: Rotational Dynamics，类别为 美国物理杯赛(Physics Bowl)
[单选题]
16.50: A uniform stick of mass M and len kpizwh;e i p9oiu67 u) +lal5gd )*)tlgth L is fixed to rotate ab )n+mec o71f xdab0 6o)v9irs yout a frictionle ros+b9yf md )ivaex17co )60n ss pivot located L/3 from one end. The stick is released from rest incrementally away from being perfectly vertical, resulting in the stick rotating clockwise about its pivot. When the stick is horizontal, what is the tangential speed of the center of mass about the pivot?
A. $\sqrt{\frac{gl}{15}}$
B. $\sqrt{\frac{3gl}{10}}$
C. $\sqrt{\frac{gl}{10}}$
D. $\sqrt{\frac{3gl}{20}}$
E. $\sqrt{\frac{gl}{12}}$
参考答案: E
本题详细解析:
暂无
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