本题目来源于试卷: Basic Concepts，类别为 美国物理杯赛(Physics Bowl)
[单选题]
06.49: Three identical *2 t ttyy.,3lmlb 5ulofw +) ffiut+0dHookian springs of s )cn( d* p4yhn+c(szew pring constant k are connected as shown to 4cywen )(p* zshd(nc+a mass M in equilibrium. The horizontal platform shown between the springs and the springs themselves have no mass. If the mass M is slightly displaced vertically, the mass exhibits simple harmonic oscillation. Assume that the horizontal platform does not rotate during the oscillations.What is the period of the oscillation?
A. $2π\sqrt{\frac{3M}{k}}$
B. $2π\sqrt{\frac{M}{3k}}$
C. $2π\sqrt{\frac{M}{k}}$
D. $2π\sqrt{\frac{2M}{3k}}$
E. $2π\sqrt{\frac{3M}{2k}}$
参考答案: E
本题详细解析:
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