| A | B |
|---|
| work | the result of a force moving an object over some distance |
| force | the effort needed to get the work done |
| mechanical advantage | how much a machine multiplies the force you put into it |
| two things that you need to know in order to measure work | force and distance |
| equation for calculating work | force x distance = work |
| what happens to distance when a simple machine helps reduce force | the distance gets longer |
| six simple machines | pulley, lever, inclined plane, screw, wedge and wheel and axle |
| the extra distance when using a pulley | the length of the rope |
