Physics-
General
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Question

A uniform rod of length l is sliding such that one of its ends is always in contact with a vertical wall and its other end is always in contact with horizontal surface. Just after the rod is released from rest, the magnitude of acceleration of end points of the rod are a and b respectively. The angular acceleration of rod at this instant will be

  1. fraction numerator a plus b over denominator l end fraction    
  2. fraction numerator square root of open vertical bar a to the power of 2 end exponent minus b to the power of 2 end exponent close vertical bar end root over denominator l end fraction    
  3. fraction numerator square root of a to the power of 2 end exponent plus b to the power of 2 end exponent end root over denominator l end fraction    
  4. None of these    

The correct answer is: fraction numerator square root of a to the power of 2 end exponent plus b to the power of 2 end exponent end root over denominator l end fraction

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