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Question

Uniform rod AB is hinged at end A in horizontal position as shown in the figure. The other end is connected to a block through a massless string m as shown. The pulley is smooth and massless. Masses of block and rod is same and is equal to m. Then acceleration of block just after release from this position is

  1. 6g/13    
  2. g/4    
  3. 3g/8    
  4. None    

The correct answer is: 3g/8

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