Physics-
General
Easy

Question

In the system shown in figure the friction coefficient between ground and bigger block is mu. There is no friction between both the blocks. The string connecting both the block is light; all three pulleys are light and frictionless. Then the minimum limiting value of mu so that the system remains in equilibrium is

  1. fraction numerator 1 over denominator 2 end fraction    
  2. fraction numerator 1 over denominator 3 end fraction    
  3. fraction numerator 2 over denominator 3 end fraction    
  4. fraction numerator 3 over denominator 2 end fraction    

The correct answer is: fraction numerator 2 over denominator 3 end fraction


    In equilibrium T equals m g N equals 3 m g blank & blank f equals 2 T equals 2 m g in limiting case f equals f subscript m a x end subscript

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