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**1. Homework Statement**

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. Homework 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.