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A coin is placed on a horizontal platfor...

A coin is placed on a horizontal platform which undergoes vertical SHM of angular frequency `omega` . The amplitude of oscillation is gradually increased. The coin will leave contact with platform for the first time.

A

At the mean position of the platform going upward

B

For an amplitude of g/`omega^2`

C

For an amplitude of `g^2`/`omega^2`

D

At the mean position of the platform going downward

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