two blocks having masses m1 2 kg and m2 4 kg are connected by a string passing over a pulley as shown in the figure the puelley has a radius R = 0.1 m and moment of inerita l = 20 kg m^2 about its axis of rotation the stirng does not slip on the what is angular speed rad/s of the pulley after the second blocks descends through a distance h = 0.40?