Two masses are suspended from a pulley as shown in the diagram. The pulley itself has a mass of 0.20 kg, a radius of 0.15 m, and a constant torque of 0.35 Nm due to the friction between the rotating pulley and its axle. What is the magnitude of the acceleration of the suspended masses if m1=0.40 kg and m2=0.80 kg? (Neglect the mass of the string.)