A track has a shape given by the formula y(x) = A x2, where x is the horizontal coordinate, y is vertical, and A is a constant.

A track has a shape given by the formula y(x) = A x2, where x is the horizontal coordinate, y is vertical, and A is a constant. (a) What is the potential energy of a block of mass m on this track as a function of x due to gravity? (b) Use the formula Fx= dU/dx to find the x component of the total force on the object