|
 Lever | A simple machine that has a bar that pivots at a fixed point called a fulcrum |
| 1st Class Lever | Lever in which the fulcrum is between the input force and the load (output force) |
| 2nd Class Lever | Lever in which the load is between the fulcrum and the input force |
| 3rd Class Lever | Lever in which the input force is between the fulcrum and the load. |
| Pulley | A simple machine that has a grooved wheel that holds a rope or cable, and the load is attached to the end of the rope, while the input force is applied on the other end. |
| Fixed Pulley | A pulley that is attached to something that does not move (only spins). |
| Movable Pulley | A pulley that is attached to the object being moved, and moves with the load |
| Block and Tackle | A combination of fixed and movable pulleys with multiple rope segments |
| Wheel and Axle | A simple machine consisting of two circular objects of different sizes working together; the wheel is the larger of the two. |
| Inclined Plane | A simple machine that is a straight, slanted surface used to move loads; a ramp |
| Wedge | A simple machine that combines two inclined planes back to back |
| Screw | A simple machine that consists of an inclined plane wrapped around a cylinder |