The figure shows a system with 3 masses connected by ropes, tension T3 = 65 N, mass m1 = 12 kg, m2 = 24 kg and m3 = 31 kg. mass m1 = 12 kg, m2 = 24 kg and m3 = 31 kg. If the coefficient of kinetic friction between the masses and the ground is 0.10 determine the acceleration of the system

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!