本题目来源于试卷: Work Energy and Power，类别为 美国物理杯赛(Physics Bowl)
[单选题]
12.48: An object of ma-7l8xb-*obo xu.dt gu ss M is dropped from aheigh)5r+( teazj2mvx9pjs7 svbz.5n 8qm f whaq,9t H above the ground. The object bounces off of a horizontal surface in 5pr9bm.v,vqnt a5whj7z+s(q)j9z 28mex a sf a collision lasting time T. The object then rises upward to a maximum height H/2. What was the magnitude of the average net force acting on the mass during the collision with the surface?
A. $(2-\sqrt{2})\frac{M\sqrt{gH}}{T}$
B. $(1+\frac{\sqrt{2}}{2})\frac{M\sqrt{gH}}{T}$
C. $\frac{M\sqrt{3gH}}{T}$
D. $(2\sqrt{2}-1)\frac{M\sqrt{3gH}}{T}$
E. $(1+\sqrt{2})\frac{M\sqrt{3gH}}{T}$
参考答案: E
本题详细解析:
暂无
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