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Easy

Question

A particle is attached with a string of length l which is fixed at point O on an inclined plane what minimum velocity should be given (at the lowest point) to the particle along the incline so that it may complete a circle on inclined plane (plane is smooth and initially particle was resting on the inclined plane.)

  1. square root of 5 g l end root    
  2. square root of fraction numerator 5 g l over denominator 2 end fraction end root    
  3. square root of fraction numerator 5 square root of 3 g l over denominator 2 end fraction end root    
  4. None of these    

The correct answer is: square root of fraction numerator 5 g l over denominator 2 end fraction end root

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