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two blocks are connected by a string over a disk-shaped pulley with mass M8.5 kg and outermost readuis R = 0.10m. The mass of block 1 is m1 = 15 kg and the mass of block 2 is m2= 10kg , and the angule theta of the incline is 30 degree. The pulley axle, and the surface of the incline, are frictionless. Calculate the acceleration of the hanging block, and compare with the result for when the pulley was assumed to massless.

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