(11-38) An Atwood machine (Fig. 11-16) consists of two masses, mA = 7.0 kg and mB = 8.2 kg, connecte

(11-38) An Atwood machine (Fig. 11-16) consists of two masses, mA = 7.0 kg and mB = 8.2 kg, connected by a cord that passes over a pulley free to rotate about a fixed axis. The pulley is a solid cylinder of radius R0 = 0.40 m and mass 0.80 kg. (a) Determine the acceleration a of each mass, (b) What percentage of error in a would be made if the moment of inertia of the pulley were ignored? Ignore friction in the pulley bearings.