Birkofer Ch. 18 A
| Description: | Birkofer Ch. 18 Work and Machines A |
| Category: | Physical Science |
| Created by: | birkoferj on 2008-10-31 |
| Question | Answer |
| What is Work? | is when a force causes and object to move in the direction of the force. |
| What is power? | Power is the rate at which work is done |
| Define Machine | A machine is a device that helps make work easier by changing the size or direction of a force. |
| lever | a simple machine consisting of a bar that pivots on a fixed point ( fulcrum ). |
| inclined plane | a simple machine that is a straight slated surface. |
| wedge | is a double sided inclined plane that moves |
| pulley | is a simple machine consisting of a grooved wheel that holds a rope or a cable |
| compound machine | made of two or more simple machines |
| Work input | the work you do on a machine. |
| Work output | the work done by the machine |
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