本题目来源于试卷: Angular Momentum，类别为 美国物理杯赛(Physics Bowl)
[单选题]
01.27: A spinning ice:1 o. h.i xoms3b+tzwe skater canau*yc9t r+t/pz2 xu:r increase his rate of rotation by bringing his arms and free leg closer to his body. How does t2+/rzpyt:*9cx uutr ahis procedure affect the skater's rotational momentum and kinetic energy?
A. rotational momentum remains the same while kinetic energy increases
B. rotational momentum remains the same while kinetic energy decreases
C. both rotational momentum and kinetic energy remain the same
D. rotational momentum increases while kinetic energy remains the same
E. both rotational momentum and kinetic energy increase
参考答案: A
本题详细解析:
暂无
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