Rotational Dynamics (id: af4d5d2c4)

本题目来源于试卷: Rotational Dynamics，类别为 美国物理杯赛(Physics Bowl)

[单选题]
04.46: Two solid uniform disks of equal mass eam / fik3j7a1rdch are mounted to rotate about l9bd axp.4f3gan axis fixed through the center of the disk. Each disk is initially at rest. The radii p xagl.df34b9of the disks are $r_1 < r_2$. A force F is applied to each disk at its edge for the same amount of time. Assume that friction is negligible. What statement is true about the kinetic energy K and magnitude of angular momentum L of the disks?

A. $L_1= L_2;K_1< K_2 $
B. $L_1= L_2;K_1= K_2$
C. $L_1< L_2;K_1> K_2$
D. $L_1< L_2;K_1< K_2$
E. $L_1< L_2;K_1= K_2$


参考答案:  E


本题详细解析: 暂无

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