a mass m1 is connected by a light string that passes over a pulley of mass m to a mass m2 as shown in the figure. both masses move vertically and there is no slippage between the string and the pulley. the pulley has a radius of 30.0 cm and a moment of inertia of mr2. if m1 is 4.00 kg, m2 is 3.00 kg and m is 6.00 kg, then what is the tension in the string that is attached to m1?