Physics-
General
Easy

Question

A 10 kg ball attached to the end of a rigid massless rod of length 1 m rotates at constant speed in a horizontal circle of radius 0.5 m and period 1.57 sec as in fig. The force exerted by rod on the ball is

  1. 1.28 N    
  2. 128 N    
  3. 10 N    
  4. 12.8 N    

The correct answer is: 128 N

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