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Question

In the given figure, two bodies of mass m subscript 1 end subscript and m subscript 2 end subscript are connected by massless spring of force constant k and are placed on a smooth surface (shown in figure), then

  1. The acceleration of centre of mass must be zero at every instant    
  2. The acceleration of centre of mass may be zero at every instant    
  3. The system always remains in rest    
  4. None of the above    

The correct answer is: The acceleration of centre of mass must be zero at every instant


    The resultant force on the system is zero. So, the centre of mass of system has no acceleration

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