Hi everyone. I'm confused with the balance of energy in this situation (I'm comparing the mechanical energy, initially, at rest, at a height = h, and then, at the end, at height = 0). It doesn't seem to be fine, maybe I missed something. I'd appreciate some help - Everything is in the .jpg below. There are 2 relevant equations: 1. The work done by a nonconservative force is equal to the change in mechanical energy. (Wnc = Delta E) 2. W = Force (dot) distance. Also, take into account that h / sin(theta) is equal to the hypotenuse of the inclined plane.