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A block of mass M is attached to the low...

A block of mass M is attached to the lower end of a verticle spring. The spring is hung from a ceiling and has force constant value k. The mass is released form rest with the spring intially unstretched. The maximum extension produced in the length of the spring will be

A

4 M g/k

B

2 M g/k

C

M g/k

D

M g/2k

Text Solution

Verified by Experts

The correct Answer is:
B
`M_(gy) = (1//2) ky^(2), y = (2Mg//k)`
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