Question

Two blocks of mass m and 2m respectively are connected together by a light spring of stiffness k and natural length l .the system is lying on a smooth horizontal surface with the block a in contact with a fixed vertical wall as shown. the block b is pressed towards the wall by a distance of x° from the natural position of the spring then released. there is no friction anywhere. if block b is released at a time t=0 and a just loses contact with the wall at time t=∆t 10 the average acceleration of centre of mass of the system during the time t=0 to t=∆t is?
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Answer 1

Answer:

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