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What Is a Pulley?
A pulley is any mechanical device that uses a wheel with a groove to turn and pull an object with a type of yarn or material. Discover the many uses for a pulley with information from a sustainable gardener in this free video on gardening.... More »
Difficulty: Moderate
Source: www.ehow.com

en.wikipedia.org/wiki/Pulley

A pulley is a wheel on an axle or shaft that is designed to support movement and change of direction of a taut cable, supporting shell is referred to as a "block.".

.ask.com/youtube?q=What+Is+a+Pulley%3F&v=LiBcur1aqcg
Feb 14, 2012 ... Understand the mechanism of the simple machine, the pulley. Understand and learn about how these machines make work a lot more easier ...

eschooltoday.com/science/simple-machines/what-is-a-pulley.html

The Pulley Have you seen your school flag being raised before? This is possible with a simple pulley. When you pull down on the rope, the pulley turns and the ...

www.dictionary.com/browse/pulley

Pulley definition, a wheel, with a grooved rim for carrying a line, that turns in a frame or block and serves to change the direction of or to transmit force, as when  ...

mocomi.com/pulley

Learn what a pulley is - a simple machine that reduces the time and energy taken to lift heavy objects through this animated learning video.

quatr.us/physics/machines/pulley.htm

April 2016 - A pulley is really a kind of wheel, just as a screw is a kind of inclined plane. But pulleys are so important that people give them their own category.

www.explainthatstuff.com/pulleys.html

May 18, 2017 ... An easy-to-follow explanation of how pulley wheels help you lift more by multiplying your lifting force.

www.pbslearningmedia.org/resource/evscps.sci.phys.pulley/what-is-a-pulley

One answer is to use a pulley. A pulley is a simple machine. In this original KET video, children learn about the workings of this basic mechanism. This video is ...