Screw

Screw

A screw is a simple machine that converts rotational motion into linear motion and increases force. It is basically an inclined plane wrapped around a cylinder. When you turn a screw, the threads pull it forward into a material or lift an object with less effort. Screws are used in many everyday tools—like jars, bolt...

Have you ever twisted the lid of a jar or screwed in a light bulb in the socket? If so, then you’ve used a screw!

A screw is one of the most useful simple machines. It helps hold things together and move objects with less effort.

At its core, a screw is just an inclined plane—a slanted surface—wrapped around a cylinder. The raised sp...