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In the figure, block A is released from ...

In the figure, block A is released from rest when the spring is at its natural length. For the block B of mass m to leave contact with the ground at some stage, what should be the minimum mass of block A?
.

A

2M

B

M

C

`M/2`

D

a function of M and the force constant of the spring

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The correct Answer is:
C
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