A hoop and a disk (both of mass 1.8 kg and radius of 0.2 m) roll without slipping up a straight incline with an initial velocity of 2.8 m/s. (The moment of inertia of a hoop is I=MR^2 The moment of inertia of a disk is I=0.5MR^2.
A. What is the maximum gain in height of the hoop?
B. What is the maximum gain in height of the disk?