Detailed solution and explanation

4. Consider the inclined plane shown below. Assume that there is no sliding friction or friction in the axle of the pulley and that the pulley has negligible mass. Also, the mass m, = 20 kg, and the angle is 0 = 30. a) If mass my is moving up the plane with constant velocity, then what must be the mass of my? b) Suppose m2 = 20 kg. Then what will be the acceleration of mass m, ? m1 m 2 6