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A block P of mass is placed on a fricati...

A block P of mass is placed on a fricationless horizontal surface. Another block Q of same mass is kept on P and connected to the wall with the help of a spring of spring constant k as shown in the figure. `mu_(s)` is the coefficient of frication between `P` and `Q`. The block move together performing SHM of the amplitude A. The maximum value of the frication force between P and Q 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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