A mass m is allowed to fall on a pedestal fixed on the top of a vertical spring. If the height of the mass was H from the pedestal and the compression of the spring is d then the spring's force factor is given by
A
B
C
D
2 Mg 
Text Solution
Verified by ExpertsThe correct answer is:
D
Note 
kd 2 = mg (H + d)
or k = 
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