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Question

Two persons of mass m1 and m2 are standing at the two ends A and B respectively, of a trolley of mass M as shown When only the person standing at B jumps from the trolley towards right while the person at A keeps standing, then

  1. the trolley moves towards left    
  2. the trolley moves with velocity fraction numerator m subscript 2 end subscript u subscript r e l end subscript over denominator m subscript 1 end subscript plus m subscript 2 end subscript plus M end fraction    
  3. the centre of mass of the system remains stationary    
  4. all the above    

The correct answer is: all the above

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