Difference between revisions of "Build a Pulley"
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Widely known as one of the “simple machines,” pulleys are among the earliest machines ever used by humans.<ref name="rf1">http://www.lhup.edu/~dsimanek/TTT-fool/fool.htm</ref> A pulley is composed mainly of a wheel fixed to an axle, around which a rope is wrapped that can be used to lift and move weighty objects. This allows you to change the direction of your work -- pulling down on a rope, for example, to raise a box upwards. <ref name="rf2">http://www.rcsccwarrior.ab.ca/Resources/Disc_Files/Resources/Phase_III/406_Seamanship/406.09_MLP.pdf</ref> Pulleys can be fixed, movable, or compound. | Widely known as one of the “simple machines,” pulleys are among the earliest machines ever used by humans.<ref name="rf1">http://www.lhup.edu/~dsimanek/TTT-fool/fool.htm</ref> A pulley is composed mainly of a wheel fixed to an axle, around which a rope is wrapped that can be used to lift and move weighty objects. This allows you to change the direction of your work -- pulling down on a rope, for example, to raise a box upwards. <ref name="rf2">http://www.rcsccwarrior.ab.ca/Resources/Disc_Files/Resources/Phase_III/406_Seamanship/406.09_MLP.pdf</ref> Pulleys can be fixed, movable, or compound. | ||
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[[Category: Holding and Support Tools]] | [[Category: Holding and Support Tools]] | ||
