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 length L is fixed to rotate about a j/s jy.e c( x5ij*3hwmfricti jje im3 cy5x.jhsw(/*9a.se svp i+laj9rd)5 onless pivot located L/3 from one 9 vs. 9jd+ae5iras )pl 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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