4-1. A double
pulley consists of two parts that are holding together. It has a mass of 
and a radius of
gyration around its center of 
. The smaller part with 
is connected to a
heavier mass B, 
, while the bigger part with 
is connected to a
lighter mass A, 
. Determine the kinetic energy of the system when 
clockwise. Assume the
weight of the cables is negligible and they do not slip.
Solution: 
