A block of mass 'm' is placed on the floor of a lift, moving upward with an uniform acceleration a = g. (muis the coefficient of friction between block and the floor of lift). If a horizontal force of umg acts on the block, then horizontal acceleration of the body is .......

A block of mass 'm' is placed on the floor of a lift, moving upward wi

1.	A block of mass 'm' is placed on the floor of a lift, moving upward with an uniform acceleration a = g. (muis the coefficient of friction between block and the floor of lift). If a horizontal force of umg acts on the block, then horizontal acceleration of the body is .......
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