A pulley of mass 1.6 kg and radius 3.8 cm holds 2 masses: mass of A= 4.2 kg and mass of B= 7.0 kg
a) what is the rotational inertia of the pulley if it is a disk?
b) what is the acceleration of the system?
c) what is the tension in the cable holding mass A?
d) what is the tension in the cable holding mass B?