本题目来源于试卷: gc physics textbook chapter 6 problems，类别为 IB物理学
[问答题]
An engineer is design k9l*ll;uv.lsnw n2h) (m cumtf *xa,9iokb9ep6 z: (crj:i30 scwkk )0o0,e3gfjw cnnng a spring to be placed at the bottom of an elevator shaft. If the elevator cable should break when the elevator is at a height h above the top of the spring, caoi ge0j)w9:( bn p 3:c, no3ccz0e sfkjr60wkklculate the value that the spring stiffness constant k should have so that passengers undergo an acceleration of no more than 5.0 g when brought to rest. Let M be the total mass of the elevator and passengers.
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