Types of simple machines

Types of simple machines
Simple machines can be broken down into six different categories.

Machine          Graphic          Example

Pulley – A pulley uses wheels and ropes/chains to raise, lower, or move a load. They can be combined with other pulleys to gain even more of an advantage and move heavier loads.

• Elevator.
• garage doors
• gym.

Lever – A lever is a bar that rests on a support and can be used to lift or move loads.

Wedge – A wedge is an object with a slanted edge which is sharp. It can be used to cut materials apart.
 
Wheel and Axle – A wheel, when combined with a rod through its center can be used to lift or move loads.
Inclined Plane – This is any slanted surface that is used to connect a lower surface to a higher one.

Screw – Screws are inclined planes that are wrapped around a pole which holds things together.