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A block B is m kept on an inclined plane...

A block B is m kept on an inclined plane. Anotherblock A is inserted in a slot in the block B though a light string. One end of the string is fixed to a support and other end of the string is attached to A. All the surfaces are smooth. Masses of A and B are same. The acceleration of block B is found to be `4//n`.Find value of n.

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