1. The problem statement, all variables and given/known data http://img192.imageshack.us/img192/6482/asderl.jpg [Broken] Find S(t). 2. Relevant equations I managed to find these equations, but dont know how to solve them completely. mx``=Rsinφ my``=Rcosφ-mg xtgφ+y=h x`(0)=0; x(0)=0; y`(0)=0; y(0)=h 3. The attempt at a solution Need to find s(t). Is S=(x^2+y^2)^0.5? Thank you!