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Question

Two persons of mass m subscript 1 end subscript and m subscript 2 end subscript are standing at the two ends A and B respectively of a trolley of mass M as shown When both the persons jump simultaneously with same speed then:

  1. the centre of mass of the system remains stationary    
  2. the trolley remains stationary    
  3. the trolley moves toward the end where the person with heavier mass is standing    
  4. none of these    

The correct answer is: the centre of mass of the system remains stationary

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