Conservation of Energy in Physics

This lecture covers the calculation of work done by gravity, non-conservative forces, and the conservation of mechanical energy. It discusses the transformation of mechanical energy into heat due to friction and deformations. The concept of power is introduced to quantify the rate of work done by a system. The lecture also delves into the gravitational potential energy, emphasizing its general formula and coherence with the simpler expression mgh. It concludes with examples of conservation of energy in various scenarios, such as collisions and circular motion.