Physics-
General
Easy

Question

A block of mass M is placed on a horizontal surface and it is tied with an inextensible string to a block of mass, as shown in figure. A block of mass m0 is also placed on M. If there is no friction between any two surfaces, then

  1. the downward acceleration of the block m is fraction numerator m g over denominator m plus m subscript 0 end subscript plus M end fraction    
  2. the acceleration of m0 is zero    
  3. If the tension in the string is T then Mg < T < mg    
  4. all the above If a friction force exist between block M and the horizontal surface with the coefficient of friction mu.    

The correct answer is: all the above If a friction force exist between block M and the horizontal surface with the coefficient of friction mu.

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