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Module 2
Mechanical Energy
Term | Definition |
---|---|
Kinetic energy | The energy due to motion |
Potential energy | Energy due to interactions between objects or particles when distance changes Stored energy |
Elastic potential energy | Energy stored in objects that are compressed or stretched |
Gravitational potential energy | Stored energy due to interactions of objects in a gravitational field |
Mechanical energy | The sum of the potential energy and kinetic energy in a system |
Law of conservation of energy | States that, although energy is always transferring from one form to another energy is not created or destroyed |
Work | The transfer of energy to an object by a force that makes an object move in the direction of the force; force applied over distance |
Power | The rate at which work is done |
Mechanical advantage | The ratio of a machines output, force produced to the input force applied |
Efficiency | And the ratio of output work to the input work |
Simple machine | A machine that does work using only one movement |