A ball is released on the inside surface of a half-pipe. The left side of the pipe is rough, so that the ball rolls there without slipping. The right side of the pipe is coated with frictionless ice. If the ball is released from a height h on the left side, how high will it go on the right side? Neglect air resistance. A. h B. Higher than h C. Lower than h D. There is no way to answer without knowing the mass of the ball. I see the answer is C, but I don't understand why. Doesn't the law of conservation turn PE into enough KE to get back up to h???????? Why not???