1. The problem statement, all variables and given/known data A solid disk of mass m and radius R rolls without slipping with a velocity v. Assuming it doesn't slip, how far vertically will it roll up an incline? 2. Relevant equations I=0.5mr2 E=0.5Iω2 KE=0.5mv2 PE=mgh 3. The attempt at a solution I'm thinking that we need to find the height h when the kinetic energy is converted to potential energy. So: 0.5Iω2+mv2=mgh 0.5*0.5mr2ω2+mv2=mgh 0.25r2ω2+v2=gh h=(0.25r2ω2+v2)/g Is that right? I feel weird because I still have ω in there.