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A raft of mass M with a man of mass m aboard stays motionless on the surface of a lake. The man moves a distance L* relative to the raft with velocity v*(t) and then stops. Assuming the water resistance to be negligible, find: (a) the displacement of the raft 1 relative to the shore; (b) the horizontal component of the force with which the man acted on the raft during the motion. |
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