| A | B |
|---|
| lever | simple machine that people use to gain a mechanical advantage |
| lever arm | stick or beam free to pivot at a point |
| fulcrum | is the point where the lever arm pivots |
| load | mass lifted or the resistance overcome by a lever |
| effort | force needed to move a load or overcome a resistance |
| newton | what effort is measured in |
| two-coordinate graph | show relationship between 2 variables |
| mechanical advantage | makes work easier (benefit of using simple machine) |
| class-1 levers | fulcrum in middle and load and effort at the end |
| class-2 levers | load in middle and fulcrum and effort at the ends |
| class-3 levers | effort in the middle and fulcrum and load at the end |
| diagram | drawing that describes the relationship of all parts of a system |
| pulley | a wheel with a rope that can run to change the direction of the pull (force) that lifts a load |
| fixed pulley | wheel that is attached to something above the load |
| movable pulley | a wheel that is attached to the load |
| directional advantage | change in direction that results from passing a rope through a pulley |
| simple machine | 6 basic devices that provide a mechanical advantage |
