The Law of Conservation of Energy states that energy cannot be created or destroyed, but can only be transformed from one form to another. In any closed system, the total energy remains constant over time.
This principle means that when energy changes form, such as from potential energy to kinetic energy, the total energy before and after the transformation remains the same. For example, when you lift a ball, you are converting chemical energy from your muscles into gravitational potential energy. If you drop the ball, that potential energy is converted back into kinetic energy as the ball falls.
It’s important to understand that while energy can change forms and move between different systems (like from a hot source to a cold one), the overall amount of energy in an isolated system will not change. This principle is fundamental in all areas of physics and helps us understand how energy works in various processes, whether they occur naturally or through human-made mechanisms.