1. The problem statement, all variables and given/known data A particle slides under gravity along a smooth path in the x-z plane by z=b-(x^2/a). Show that the energy of this motion can be expressed as E=.5m*xdot^2*[1+(2x/a)^2] + mgb[1-(x^2/ab)] 2. Relevant equations T(A)+V(A) = T(B)+V(B), where T is kinetic energy 3. The attempt at a solution I understand how to get the potential energy term, but I am confused on how to calculate the kinetic term.