A cylindrical rod 25.0 cm long with a mass of 1.20 kg and aradius of 1.50 cm has a ball of diameter of 7.90 cm and a mass of2.00 kg attached to one end. The arrangement is originally verticaland stationary, with the ball at the top. The apparatus is free topivot about the bottom end of the rod.
(a) After it falls through 90°, what is its rotational kineticenergy?
J
(b) What is the angular speed of the rod and ball?
rad/s
(c) What is the linear speed of the ball?
m/s
(d) How does this compare with the speed if the ball had fallenfreely through the same distance of 29.0 cm?
vswing is  ---Select--- greater thanless than vfall by  %
