| A | B |
|---|
| First Class lever | fulcrum in the middle |
| Second Class lever | load in the middle |
| Third Class lever | force in the middle |
| Friction | when two things rub together |
| Work | force x distance |
| Fixed Pulley | advantage-uses body weight , gravity |
| Movable Pulley | advantage- Uses less force |
| Combination Pulley | Advantage- uses body weight and less force |
| Fixed Pulley- disadvantage | little change in force |
| Movable Pulley-disadvantage | moves more distance |
| Combinaton Pulley-disadvantage | Moves more distance |
| Pair of pliers | 1st class lever |
| Clothesline | fixed pulley |
| ramp | inclined plane |
| hockey stick | 3rd class lever |
| nutcracker | 2nd class lever |
