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An ideal spring supports a disc of mass ...

An ideal spring supports a disc of mass M. A body of mass m is released from a certain height from where it falls to hit M. The two masses stick together at the moment they touch and move together from then on . The oscillations reach to a height a above the original level of the disc and depth b blow. it The constant of the force of the spring is

A

`(2mg)/(b-a)`

B

`(mg)/(b-a)`

C

`(2mg)/(a-b)`

D

`(mg)/(2(a-b))`

Text Solution

Verified by Experts

The correct Answer is:
C
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