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A block of mass M is pulled along a fric...

A block of mass M is pulled along a frictionaless horizontal surface by a rope of mass m by applying a horizontal force F at the other end of the rope. The force exerted by the rope on the block is

A

`(mF)/(m+M)`

B

`(mF)/(M-m)`

C

`(MF)/(M-m)`

D

`(MF)/(m+M)`

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