| A | B |
|---|
| work is done when | object moves a distance because of force |
| wedge | inclined plane that moves |
| mechanical advantage | force exerted on a machine |
| your elbow is a | lever |
| wedge, screw, lever, inclined plane | simple machines |
| baseball bat | multiplies distance |
| work = | force x distance |
| compound machine | 2 or more simple machines working together as 1 machine |
| mech adv of wheel and axle = | radius of wheel divided by radius of axle |
| friction | causes wasted work |
| without friction there would be | equal input and output work |
| fulcrum | fixed point a lever pivots around |
| 1 | mechanical advantage that changes only direction of force |
| power | measured in watts |
| pulling down on rope to raise a flag | changing direction over which force is exerted |
| mech adv of inclined plane = | length of incline divided by height of incline |
| 3rd class lever | fishing pole |
| joints act as | fulcrum of levers |
| screw | unclined plane wrapped around a cylinder |
| ramp is example of | inclined plane |
