accel of masses?

Question

A mass m1 is connected by alight string that passes over a pulley of mass M to a mass m2 as shown in the figure. Both masses move vertically ans there is no slippage between the string and the pulley. The pulley has a radius of 30 cm and a moment of inertia of MR^2. If m1 is 4.0 kg, m2 is 3.0 kg, and M is 6.0 kg then what is the acceleration of the masses??

please help, thanks

Answer 1

The force tangent to the pulley F=(6-4)g
The torque T=Fr=I x angular acceleration
The accelaration of the masses = r x angular acceleration