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In fig. the man and the platform togethe...

In fig. the man and the platform together weight 950N. The pulley can be treated as frictionless. Determine how hard the man has to pull on the rope to lift himself upward above the ground with constant velocity. If the weight of man is 550 N, what is the normal reaction between them?

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Taking man and platform together on system with constant velocity.
`T=950 N`=force applied by man from FBD of man only,
`N=T+550 =950+550`
`=1500N`
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CENGAGE PHYSICS-NEWTON'S LAWS OF MOTION 1-Exercise 6.2
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