本题目来源于试卷: Rotational Dynamics，类别为 美国物理杯赛(Physics Bowl)
[单选题]
98.28: A solid disk hasfr75 kw 5i0deypbut8w)q4vf2 k(mt/ g mass m, radius r,c 89rg 3rx/teq and rotational inertia $0.5mr^{2}$ . The disk is initially at rest. A constant force F acts tangential to the rim. What is the angular acceleration of the disk?
A. $\frac{m}{Fr^{2}}$
B. $\frac{m}{Fr}$
C. $\frac{m}{2Fr^{2}}$
D. $\frac{2F}{mr^{2}}$
E. $\frac{2F}{mr}$
参考答案: E
本题详细解析:
暂无
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