Rotational Dynamics (id: af4d5d2c4)

admin · 发表于 2024-8-14 20:55:38

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 uniqxs) ta ub/0qw5g.hqp3x d2/qform disks of equal0pn .(3e r6gx1xpz oa5isb4bp mass each are mounted to rotate about an ax4rxzp6ng .350psxb1 ipeb( a ois fixed through the center of the disk. Each disk is initially at rest. The radii of 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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