A block of mass m1 = 30.0 kg (starting from the rest) is going down an inclined plane at angle θ = 30°, is connected by a massless cord that is wrapped around a uniform disk of mass M = 1.50 kg and radius R = 10.0 cm to a second block of mass m2 = 5.00 kg hanging vertically. The disk can rotate about a fixed horizontal axis through its center; the cord cannot slip on the disk. The coefficient of kinetic friction between m1 and the surface is μk = 0.150. Find (a) the magnitude of the acceleration for the blocks, (b) the tension T1 in the cord at the left and (c) the tension T2 in the cord at the right. After m1 moves 2 m, (d) What is the speed of m2? (e) How long will it take for m1 to travel 2.00 m? (f) What is the work done by the net force on m1? (h) What is the work done by the net force on m2?
A block of mass m1 = 30.0 kg (starting from the rest) is going down an inclined plane at angle θ = 30°, is connected by a massless cord that is wrapped around a uniform disk of mass M = 1.50 kg and radius R = 10.0 cm to a second block of mass m2 = 5.00 kg hanging vertically. The disk can rotate about a fixed horizontal axis through its center; the cord cannot slip on the disk. The coefficient of kinetic friction between m1 and the surface is μk = 0.150. Find (a) the magnitude of the acceleration for the blocks, (b) the tension T1 in the cord at the left and (c) the tension T2 in the cord at the right. After m1 moves 2 m, (d) What is the speed of m2? (e) How long will it take for m1 to travel 2.00 m? (f) What is the work done by the net force on m1? (h) What is the work done by the net force on m2?
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