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Levers and Pulleys

Science Vocabulary

QuestionAnswer
load mass lifted or resistance overcome
effort the force needed to make a load overcome resistance
lever(screw Lever) a simple machine used to make work easier
Newton a unit used to measure force(spring scale)
fulcrum the point where the lever arm pivots
lever arm a stick or beam free to pivot on a point
simple machines any of the six basic devices that provide mechanical or other advantage
simple machines (list) lever, pulley, wheel, inclined plane, wedge, screw
pulley a wheel with a grooved rim in which a rope can run to change the direction of the pull
fixed pulley has a wheel that is attached to something above the load
movable pulley a wheel that is attached to lift a load
Created by: eqm
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