Physics-
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Question

A wedge of mass 2 m and a cube of mass m are shown in figure. Between cube and wedge, there is no friction. The minimum coefficient of friction between wedge and ground so that wedge does not move is :

  1. 0.10    
  2. 0.20    
  3. 0.25    
  4. 0.50    

The correct answer is: 0.20

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