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Wrk,energy,machines
Unit 2 Lessons 1, 2, and 4
| Term | Definition |
|---|---|
| Work | The use of force to move and object some distance in the direction of the force |
| Energy | The ability to do work |
| Power | The rate at which work is done |
| Kinetic Energy | The energy of motion |
| Potential Energy | The energy an object has because of its position, condition, or chemical composition |
| Mechanical Energy | The energy possessed by an object due to its motion and position |
| Machine | Any device that helps people do work by changing the way work is done |
| Mechanical Advantage | The number of times the machine multiplies the input force |
| Mechanical Efficiency | A comparison of a machine's work output with the work input |
| Lever | A simple machine with a bar that pivots at a fixed point |
| Fulcrum | The fixed point at which a lever pivots |
| Wheel and Axle | A simple machine made of a wheel connected to a smaller cylindrical object, the axle |
| Pulley | A simple machine that has a grooved wheel that holds a rope or a cable |
| Inclined Plane | A simple machine that is a straight, slanted surface |
Created by:
18Fontek0105
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