1. The problem statement, all variables and given/known data A child starts from rest and slides down a frictionless slide. In terms of R and H, at what height h will he lose contact with the section of radius R? (child starts at the top with height H, at the bottom the slide flattens out and then forms a quarter circle to the ground with radius R) 2. Relevant equations 3. The attempt at a solution I tried figuring it out using potential energy and kinetic energy since that is the chapter. I think it has something to do with mgH=mgh+1/2mv^2 and then solving v^2 for some value using centripetal motion but I wasn't sure how to set that step up.