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Stack #181245
Work, Power & Simple Machines
| Question | Answer |
|---|---|
| energy | the ability to do work |
| fulcrum | the fixed point about which a lever pivots |
| joule | the unit used to express work and energy; equivalent to the newton-meter |
| lever | a simple machine consisting of a bar that pivots at a fixed point, called a fulcrum |
| machine | a device that helps make work easier by changing the size or direction (or both) of a force |
| power | the rate at which work is done |
| pulley | a simple machine consisting of a grooved wheel that holds a rope or a cable |
| screw | a simple machine that is an inclined plane wrapped in a spiral |
| wedge | a simple machine that is a double inclined plane that moves; often used for cutting |
| wheel and axle | a simple machine consisting of two circular objects of different sizes |
| work | the action that results when a force causes an object to move in the direction of the force |
Created by:
cvillah
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