How many paper clips did it take? Is it magic? No, it’s science at work! A pulley is one of the six simple machines. Single pulleys were part of simple cranes invented more than 3,000 years ago.

The most notable of these are known as the "six simple machines": the wheel and axle, the lever, the inclined plane, the pulley, the screw, and the wedge, although the latter three are actually ...

Simple machines include the lever, the inclined plane, the wedge, the pulley, the wheel and axle, and the screw. Combine these and you can create almost anything to make work easier. In this ...

Simple machines such as pulleys, levers and ramps made it easier for humans to lift heavy objects like rocks and logs. In this project you will use simple household materials to explore one of ...

A pulley is a wheel placed on an axle that supports the movement of a rope, cable or belt. It is one of the world’s six simple machines used to make work easier. They are not only used to lift ...

HUNTINGTON — From pulley systems to wheels and axles, children visiting Heritage Farm Museum & Village on Wednesday learned about the six simple machines that are considered the foundation of ...

Pulleys – A simple machine consisting of a grooved wheel on an axle. A pulley guides a rope, belt, or cable.