| A | B |
|---|
| device that makes work easier | machine |
| force applied to a machine | effort force |
| force that resists the force applied to a machine | resistance force |
| number of times a machine multiplies the effort force | mechanical advantage |
| efficiency | ratio of work output to work input |
| work output | work done by a machine |
| work input | work done on a machine |
| lever | a bar that is free to turn around a fixed point |
| fulcrum | fixed point around which a lever points or turns |
| pulley | rope wrapped around a wheel |
| compound machine | machine that combines two or more simple machines |
| inclined plane | slanted surface, or ramp |
