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Re: How do pulleys work? Date: Thu Oct 29 12:37:17 1998; Posted By: Madhu Siddalingaiah, Physicist, author, consultant; Area of science: Physics; ID: 905252340.Ph ... Next time you have a chance to visit a construction site, look carefully at the crane, you will see multiple pulleys at work. This way, the crane doesn't...
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www.madsci.org/posts/archives/oct98/909712615.Ph.r.html
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Subject: How do pulleys work? ... Date: Tue Sep 8 05:59:00 1998; Posted by Kat; Grade level: 10-12; School: SCEGGS Darlinghurst; City: sydney State/Province: NSW; Country: Australia; Area of science: Physics; ID: 905252340.Ph...
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www.madsci.org/posts/archives/oct98/909712615.Ph.q.html
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Artwork: How pulleys work#1: With one wheel, a pulley simply reverses the direction of the force you apply. ... Artwork: How pulleys work#2: With two wheels and two ropes, a pulley halves the lifting force you need. But you have to pull the end of the rope twice as far.
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www.explainthatstuff.com/pulleys.html
www.explainthatstuff.com/pulleys.html
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Pulley - Wikipedia, the free encyclopedia
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A pulley , also called a sheave or a drum, is a mechanism composed of a wheel on an axle or shaft that may have a groove between two flanges around its circumference. A rope, cable, belt, or chain u...
en.wikipedia.org/wiki/Pulley
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Pulleys can change the direction of the force, size of the force, or both. ... Types of Pulleys ... The pulleys work together to increase the MA of the system.
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www.smasd.org/mancusoweb/15-4.htm
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Pulleys work in a similar way to gears except they are not directly joined but linked by either elastic bands, tubular springs or some other flexible but strong material which is referred to as a belt. A common example is the fan belt in a car that links a number of pulleys.
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automata.co.uk/pulleys.htm
automata.co.uk/pulleys.htm
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Each one makes work easier to do by providing some trade-off between the force applied and the distance over which the force is applied. ... When two or more pulleys are connected together, they permit a heavy load to be lifted with less force. The trade-off is that the end of the rope must move a greater distance than the...
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www.mos.org/sln/Leonardo/InventorsToolbox.html
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There are SIX simple machines: ... Monday, November 16, 2009 ; ... Simple machines make work easier for us by allowing us to push or pull over increased distances.
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www.mikids.com/Smachines.htm
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