A wheel of R=.20 m is mounted on a frictionless, horizontal axis,as shown in the figure. A light cord wrapped around the wheelsupports a m=0.50 kg box. When released from rest,the box falls with a downward acceleration a=1/2g.
a) What is the tension T on the string?
b) What is the angular acceleration α of the wheel?
c) What is the moment of inertia I of the wheel?
d) What is the the ratio of the kinetic energy KER ofthe wheel to the kinetic energy KET of the Box?