Simple Machines: Pulleys – Flashcards
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what keeps planets in their orbits
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gravity + inertia
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has the fulcrum between the force and the load
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single fixed pulley
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a kind of lever that can change the direction of force and/or multiply
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pulley
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determines how much the force is amplified
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numbers of lines
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consists of a fixed and a movable pulley
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block and tackle
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set up so the force and load move in the same direction
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movable pulley
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pulley
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__can be set up in 3 ways: single fixed pulley, movable pulley, block and tackle
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force movement
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in a pulley system, the effort__and effort __ movement are in the same direction
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downward up
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in a block and tackle system, the effort force moves__as the load moves__
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force motion
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with the pulley system, the resistance__is in the direction of gravity, and the resistance__motion is the opposite direction
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fulcrum
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with a movable pulley, the___is at the end of the lever where the supporting rope touches the pulley
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a second class lever
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what does a movable pulley resemble
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a first class lever
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what does a single fixed pulley behave like
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single fixed pulley
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this type of pulley only changes the direction of the force
