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PULLEYS - Coggle Diagram
PULLEYS
fixed pulleys 
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what is? : is a wheel that has a groove for a (rope, chain or belt) to go round it.
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USES: wells, gym equipment
moveable pulleys
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The effort needed to move a load with a moveable pulley is half of the effort needed with a fixed pulley
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compound pulleys
If we use more pulleys it bei.omes more complex, but less effort is needed to move the load
USES: : ln passenger lifts, goods lifts, cranes
is a set of fixed and moveable pulleys, often called a block and tackle