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]
05.44: A box of mass mis initially at rest on a horizontal surface. A b6unqnp,e( ,od5lc4qconstantsg7xtt6pq, z b9flur9 m.f/5c horizontal force of mg/2 is applied to the box, directed to the rip,7xu.f/6qzm tc9f b tsrgl95 ght. The coefficient of friction of the surface changes with the distance pushed as $μ = μ_0x$ where x is the distance from the initial location. For what distance is the box pushed until it returns to rest?
A. $\frac{4}{μ_0}$
B. $\frac{2}{μ_0}$
C. $\frac{1}{μ_0}$
D. $\frac{1}{2μ_0}$
E. $\frac{1}{4μ_0}$
参考答案: C
本题详细解析:
暂无
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