A block with mass m1 on a plane inclined at angle ƒÑ to the horizontal is connected to a second hanging block with mass m2 by a cord passing over a small, frictionless pulley, as shown. The coefficient of static friction is Us ƒÝ

s and the coefficient of kinetic friction is UkƒÝ
k. Find the mass m2 for which block m1, moves up the plane at constant speed once it is set in motion.

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Nice one UCT student ^^

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