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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The pulley system consists of one or more pulleys and a rope or a cable. The number of pulleys used may increase or decrease the mechanical advantage of the system. Generally, the higher the mechanical advantage is, the easier it is to lift the object that is being lifted.
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library.thinkquest.org/27948/pulley.html
library.thinkquest.org/27948/pulley.html
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A pulley is a simple machine made with a rope, belt or chain wrapped around a wheel. The pulley is usually used to lift a heavy object (load).
http://www.the-office.com/summerlift/pulleybasics.htm
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SDP/SI Producers Of Off-The-Shelf: Bearings, Gears, Timing Belts, Timing Pulleys, Couplings, Shafts ... Over 100,000 components are available such as: Gears, Timing Belts, Timing Belt Pulleys, Fairloc® Products, Couplings, Conidrive® Self-Guiding Drive System, Gearheads, Right Angle Drives, ShaftLoc® Products,
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An overview of the six basic types of simple machines with pictures and student drawings. ... What is a simple machine ... by Todd Kranz, a graduate student at the University of Houston...
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www.coe.uh.edu/archive/science/science_lessons/sciencel...
www.coe.uh.edu/archive/science/science_lessons/scienceles1/finalhome.htm
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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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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 load. Wedge; A wedge converts motion in one direction into a splitting motion that acts at right angles to the blade.
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www.mos.org/sln/Leonardo/InventorsToolbox.html
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Purpose of Pulleys: ... Pulleys are used to transfer force or speed to turn another pulley connected by a belt. ... How to Use Pulleys:
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www.eng.iastate.edu/twt/Courses/Undergrad/packet/info/p...
www.eng.iastate.edu/twt/Courses/Undergrad/packet/info/pulleys.htm
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First time is the lat time. ...Wisdom ... ; This java applet shows the advantage of a pulley. 1. There are three sets of pulley. 2. Double click within those block to change its mass. ... Right click to increase one unit(gravity g). Left click to decrease one unit. Mass of those block are shown in blue.
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www.phy.ntnu.edu.tw/java/wheelAxle/pulley.html
www.phy.ntnu.edu.tw/java/wheelAxle/pulley.html
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