A 6.00 kg mass is connected by a light cord to a 1.00 kg mass on a smooth surface as shown in the figure. The pulley rotates about a frictionless axle and has a moment of inertia of 0.400 k∙m2 and a radius of 0.700 m. Assuming that the cord does not slip on the pulley, find (a) the acceleration of the two masses
(b) the tension T1 (attached to the hanging mass).
(b) the tension T2
really confused on this problem. I'm not sure which equations to use?