By , Ansel Olsen

A pulley is a wheel & a rope. Pulleys make lifting objects easier.

Pulleys may have been invented by Archimedes.

It was invented more than 2,500 years ago.

Pulleys are used to make objects go up by pulling down.

Pulleys were partially made to make work easier.

Bike pulleys Chain pulleys Water pulleys Motor pulleys

Elevator pulleys Food pulleys

Flagpole pulleys Toilet paper

pulleys