The conservation of mechanical energy states that when only conservative forces, such as gravity or elastic forces, act on a system, the total mechanical energy remains constant. Mechanical energy is the sum of kinetic and potential energies, and any decrease in one form results in an equal increase...
The conservation of mechanical energy states that when only conservative forces, such as gravity or elastic forces, act on a system, the total mechanical energy remains constant. Mechanical energy is the sum of kinetic and potential energies, and any decrease in one form results in an equal increase in the other. For instance, in a swinging pendulum or a freely falling body, the conversion between potential and kinetic energy occurs continuously, but their total remains unchanged. This principle is valid only when non-conservative forces like friction are negligible.