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A block P of mass m is placed on a horiz...

A block P of mass m is placed on a horizontal frictionless plane. A second block of same mass m is placed on it and is connected to a spring of spring constant K, the two blocks are pulled by distance A. Block Q oscillates without slipping. The maximum value of frictional force between blocks is

A

`(KA)/2`

B

KA

C

`mu_(k)mg`

D

Zero

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The correct Answer is:
A
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