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Question

In the figure shown a ball rolls without sliding. On a horizontal surface. It ascends a curved track up to height h and returns. Value of h is h subscript 1 end subscript for sufficiently rough curved track to avoid sliding and h subscript 1 end subscript for smooth curved track, then:

  1. h subscript 1 end subscript = h subscript 2 end subscript    
  2. h subscript 1 end subscript < h subscript 2 end subscript    
  3. h subscript 1 end subscript > h subscript 2 end subscript    
  4. h subscript 2 end subscript = 2 h subscript 1 end subscript    

The correct answer is: h subscript 1 end subscript > h subscript 2 end subscript

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