Videos | Images | Articles | Lever | Wheel and Axle | Pulley | Inclined plane | Wedge | Screw

Simple Machines

A simple machine is a tool or device that changes the direction or size of a force. It is the simplest way we can create a bigger force with less effort to make our job easier. This is called mechanical advantage.

We can find the following six simple machines all around us.
  • Lever
  • Wheel and axle
  • Pulley
  • Inclined plane
  • Wedge
  • Screw

Machines we use everyday are often made of several simple machines. For example, a pair of scissors are made of 2 levers and 2 wedges. Even a simple pizza cutter is composed of at least 3 different simple machines.

Pizza Cutter.PNG
Use the video and image searches below as well as the articles to learn about simple machines. Can you design an experiment that uses simple machines? You find many ideas when you search Rube Goldberg Machines.

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The articles below allow you to access information on the simple machines right on the same page. You can scroll down to see each article in full.


Lever: Wikipedia Article

Wheel and Axle

Wheel and Axle: Wikipedia Article


Pulley: Wikipedia Article

Inclined plane

Inclined plane: Wikipedia Article


Wedge: Wikipedia Article


Screw: Wikipedia Article