本题目来源于试卷: Rotational Dynamics，类别为 美国物理杯赛(Physics Bowl)
[单选题]
06.24: A person tries to balance verti 45emid5qlaehi1pr +8:ynjk.cally each of thlizgt80(8) -nh-2.pst gl v qnc3tklm ree long uniform cylinders with equal radii on the ev-n -)8h2p8(tl t.nzt 3lscgm 0g lqkind of his finger:
• A wood cylinder of mass m and length L with moment of inertia I
• A bamboo cylinder of mass m and length 3L with moment of inertia 9I
• A concrete cylinder of mass 4m and length 2L with moment of inertia 16I Which object is the easiest to balance and why?
A. The wood cylinder is easiest to balance because it has the smallest moment of inertia.
B. The concrete cylinder is easiest to balance because it has the largest moment of inertia.
C. The concrete cylinder is easiest to balance because it is the most massive.
D. The bamboo cylinder is easiest to balance because it has the least density.
E. The bamboo cylinder is easiest to balance because it is longest.
参考答案: E
本题详细解析:
暂无
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