1. The problem statement, all variables and given/known data A solid uniform marble is rolling without slipping when it approaches the base of a hill with a speed v0. Find the maximum height above the base that this marble will reach if the hill is rough enough to prevent slipping. 2. Relevant equations Since there is no slipping I can use the conservation of energy mgh = .5mv2 + .5Iw2 and i end up with the equation v02 = 10gh/7 3. The attempt at a solution I have no idea where to go from here, so if someone might be willing to give me a point in the correct direction, it would be most appreciated.