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 igu1ef 5m u0ay7z25uxi e9* jtto balance vertically each of three long uniform cyzlt0m7rzl9,ivm-8t 60 yim pwlinders with equal radii on the end of his fi7 t z06mvmm0t -r9lpiywlz8,i nger:
• 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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