本题目来源于试卷: Physics Unit8: Rotational Motion，类别为 国际高中通用物理
[单选题]
An ice skater has a moment of inertip )ea :+pg-iada 9bbvh96twnm mz *ehw* *(zh.cof $5.0 \; kgm^{2}$ when her arms are outstretched. At this time she is spinning at 3.0 revolutions per second (rps). If she pulls in her arms and decreases her moment of inertia to $2.0 \; kgm^{2}$, how fast will she be spinning?
A. $2.0 \; rps$
B. $3.3 \; rps$
C. $7.5 \; rps$
D. $10 \; rps$
参考答案: C
本题详细解析:
暂无
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