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General
Easy

Question

A body of mass m is slowly halved up the rough hill by a force h cross times F at which each point is directed along a tangent to the hill. Work done by the force

  1. independent of shape of trajectory    
  2. dependes upon x    
  3. depends upon h    
  4. dependes upon coeffixcient of friction left parenthesis mu right parenthesis    

The correct answer is: depends upon h

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