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A cord is wrapped around a pulley of mass m and radius r. The free end of the cord is connected to a block of mass M. The block starts from rest and then slides down an incline that makes an angle ! with the horizontal. The coefficient of kinetic friction between block and incline is 7.

(a) Use energy methods to show that the block's speed as a function of position d down the incline is

(b) Find the magnitude of the acceleration of the block in terms of 7, m, M, g, and !.

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Category:- Physics
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