A horizontal force $12 \,N$ pushes a block weighing $1/2\, kg$ against a vertical wall.  The  coefficient of static friction between the wall and the block is $0.5$ and the coefficient of  kinetic friction is $0.35.$ Assuming that the block is not moving  initially. Which one of the following choices is correct (Take $g = 10 \,m/s^2$)
  • A
    Block moves vertically downwards
  • B
    Block moves vertically upwards
  • CBlock will not move and force exerted on the block by the wall is $12\,N$
  • DBlock will not move and force exerted on the block by the wall is $13\, N$
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