Mechanics: Power, Work, Energy

This lecture covers the concepts of power, work, and energy in mechanics. It starts by defining instantaneous power, work done by a force, kinetic energy, and the conservation of mechanical energy. Examples such as a mathematical pendulum and phase portraits are discussed. The lecture also explains the work-energy theorem, power units, and the work done by gravitational and spring forces. It concludes with the demonstration of the kinetic energy theorem and the implications of forces on energy conservation.