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JEE Main2003PhysicsLaws of MotionActual

A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m . If a force P is applied at the free end of the rope, the force exerted by the rope on the block is

Options

  1. APm M + m
  2. BPm M - m
  3. CP
  4. DPM M + m

Correct answer

D. PM M + m

Step-by-step solution

Since the displacement for both block and rope is same so, the acceleration must be same for both p =( m + M ) a a = P m + M T = M a = PM m + M

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