An ideal spring with spring constant k is hung from the ceiling and a block of mass M is attached to its lower end. The mass is released with the spring initially unstretched. Then the maximum extension in the spring is
Text Solution
Verified by ExpertsThe correct answer is:
B
Here P.E. = 
kx 2
i.e., mgx = 
kx 2
or x = 2mg/k
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