| A | B |
|---|
| lever | a bar that moved on a fixed point. |
| work | amount of force applied to an object moved a certain distance.(W=FxD) |
| machine | a device which makes work easier |
| effort | the force we apply to do work |
| load | the force that resists the effort |
| fulcrum | The point where the lever pivots. |
| simple machine | a device that allows us to reduce the amount of effort we use to do work |
| axle | The rod that connects to a wheel to form a simple machine |
| friction | the force that resists the movement of two objects touching each other |
| gear | a toothed-wheel whick precisely meshes with another toothed-wheel. |
| inclined plane | a ramp that does not move |
| bevel gear | Two gears working at right angles to one another |
