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Overweight and underweight (id: 87518bd9f)

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admin 发表于 2024-7-29 21:30:12 | 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]
03.06: A 2 kg mass and a 4 kg mass on a horizontan o+d.oi2 b0qdj 3 1jugzhfu23l frictionless surface)rgo6 m(hc6auyp+ui * are connected by a massless string A. They are pulled horizonta6) rygi *puo6h+uam c(lly across the surface by a second string B with a constant acceleration of $12\; m/s^{2}$ .
What is the magnitude of the force of string B on the 2 kg mass?


A. 72N
B. 48N
C. 24N
D. 6N
E. 3N


参考答案:  A


本题详细解析: 暂无

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