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Masses m1 = 4.00 kg and m2 = 9.00 kg are connected by a light string that passes over a frictionless pulley. m1 rests on the floor and m2 rests on a fixed incline of 40degrees. The masses are released from rest, and m2 slides 1.00 m down the incline in 4.0 sec. Determine (a) the acceleration of each mass, (b) the tension in the string, and (c) the coefficient of kinetic friction between m2 and the incline.

Any help would be great. I have been working on it for 3 hours and still can't seem to figure this out.

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