A cylindrical rod 22.0 centimeter long with a mass of 1.20 kilogram and a radius of 1.50 centimeter has a ball of diameter of 8.20 centimeter and amass of 2.00 kilogram attached to one end. The arrangement is originally vertical and stationary, with the ball at the top. The apparatus is free to pivot about the bottom end of the rod.
(a) After it falls through 90 degree, compute what is its rotational kinetic energy?
J
(b) Calculate the angular speed of the ball and rod?
rad/s
(c) Determine the linear speed of the ball?
m/s
(d) How does this compare with the speed if the ball had fallen freely through the same distance of 26.1 centimeter?