Posted by need help as soon as possible on Friday, March 25, 2011 at 6:37pm.
A solid ball and a hollow ball, each with a mass of 6 kg and radius of 0.1 m, start from rest and roll down a ramp of length 3 m at an incline of 31°. An ice cube of the same mass slides without friction down the same ramp.
What is the speed of the ice cube at the bottom of the incline?

physics  Damon, Friday, March 25, 2011 at 6:52pm
(1/2) m v^2 = m g h = m g *3 sin 31
v = sqrt (2 g *3 sin 31)