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A body of mass m is released from a heig...

A body of mass m is released from a height h on a smooth inclined plane that is shown in the figure. The following can be true about the velocity of the block knowing that the wedge is fixed. .

A

Speed is maximum when resultant force on the block is zero.

B

Speed is maximum when it compresses the spring by some amount

C

Speed is maximum when the spring comes back to natural position

D

none of these

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The correct Answer is:
A, B
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