本题目来源于试卷: gc textbook chapter 11 Vibrations and Waves，类别为 通用国际物理
[问答题]
A block of mass M is/zdkbp*.plc4t:wqn 8 -9:::rqczjbxdpn )z . os(yya suspended from a ceiling by a spring with spring stiffness constant k. A penny of mass m is placed on top of the block. What is the maximum amplitude of oscil : .y-:):n9drz(cpbqazxo jyslations that will allow the penny to just stay on top of the block? (Assume $m \ll M$)
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