This video explores different methods that can be use to amplify a force, and focuses on three types of machine - levers, ...

In this video, Jonny Nelson introduces an animated explanation of moments, levers and gears. Turning forces are found in many everyday situations and are essential for machines to function.

The light switch on the wall, for example, and the stapler on your desk. You use levers when you shift gears on a bike and when you hit the brakes. A doorknob is a type of lever. And then there's ...