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Overweight and underweight (id: 4c5438f4c)

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admin 发表于 2024-7-29 21:17:04 | 显示全部楼层 |阅读模式
本题目来源于试卷: Overweight and underweight,类别为 美国物理杯赛(Physics Bowl)

[单选题]
11.10: A string of negligible mass connects an object nj6n8svlhd0i,z k * x9of massmu2vzxzh-d j8 5luk,- M=10 kg to the ceiling of an elevator. The elevator experiences a constant downward speed of 3.0 m/s. Let Trepresent the magnitude of the force on the mass M by the string (tension), G represent thezj-m-8k5 z2xvlu ,dh u magnitude of the gravitational force by the Earth acting on the mass M hanging in the elevator, and F represent the magnitude of the net force acting on the mass M. Which one of the following choices describes the relationships between these forces?

A. $ F < T < G $
B. $F = G = T $
C. $ F < G < T$
D. $F = T < G $
E. $F < T = G$


参考答案:  E


本题详细解析: 暂无

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