Physics 1401A/B Lecture Notes - Lecture 12: Mechanical Energy, Isolated System
2 Jan 2019
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Document Summary
Law of conservation of energy: energy is neither created nor destroyed, it can only change form. Isolated system: a system that cannot interact or exchange energy with external systems; also called a closed system. Open system: a system that can interact with another external system. Conservative force: a force that "gives back" energy that was transferred by doing work. Net work done by a conservative force on a particle moving around any closed path is 0. The work done by a conservative force on a particle moving between 2 points does not depend on the path taken by the particle. Conservation of mechanical energy: any change in kinetic energy must be compensates by an opposite change in potential energy: or. Work-kinetic energy theorem states while the work done is the negative of the potenital-enrgy change ( ) Only conserved when all the forces are conservative.
