pdf what are pulleys looking at simple machines uploaded by el james looking at simple machines by robert ludlum a pulley is a simple machine that consists of a wheel with a groove running along its circumference between the rims of the wheel a rope or cable passes through the groove which is work the. Pulleys are categorized as a type of simple machine consisting of a grooved wheel and a rope or cable these devices help us to lift heavy loads in an effective manner as well suspend various objects in the air for example a flag read this sciencestruck article to know more about the various types of pulley systems and their working mechanisms. Pulleys are made by looping a rope over one or more wheels they are often used to lift heavy objects pulling down on one end of the rope creates an upward pull at the other end looping the rope over more wheels increases the upward force using two wheels means you can lift something twice as heavy using the same force. Https mocomicom presents what is a pulleypulley is a simple machine and comprises of a wheel on a fixed axle with a groove along the edges to guide a