Physics-
General
Easy

Question

A solid sphere is kept over a smooth surface as shown is figure. It is hit by a cue at height h above the centre C. If the surface is rough, then after hitting the sphere, in which case the force of friction is in forward direction:-

  1. in case 1    
  2. in case 2    
  3. in both the cases    
  4. in none of the case    

The correct answer is: in case 2

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