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Levers and Pulleys

Simple Machines Unit

TermDefinition
Advantage A gain in effort or distance or a change of direction resulting from the use of a simple machine.
Class-1 lever A lever in which the fulcrum is between the load and the effort.
Class-2 lever: A lever in which the load is between the fulcrum and the effort.
Class-3 lever A lever in which the effort is between the fulcrum and the load.
Compound pulley Two or more pulleys working together.
Directional advantage A change in direction that results from passing a rope through a pulley.
Effort The force applied to move a load using a simple machine.
Fixed pulley A pulley attached in position above a load to be lifted.
Fulcrum The point at which a lever arm pivots.
Force A push or a pull.
Fulcrum The point at which a lever arm pivots.
Inclined plane A flat surface set at an angle, used to change the direction of a force.
Lever A beam, free to pivot around a point, used to move a load.
Load The weight or resistance that is moved using a simple machine.
Newton The metric unit used to measure force.
Pulley A wheel with a grooved rim in which a rope can run to change the direction of the pull and so lift a load.
Slope The slant of an inclined plane.
Wedge A double inclined plane that tapers to a point or sharp edge, used to change the direction of force.
Wheel and axle Two wheels of different diameters attached and rotating on the same axis.
Created by: Mrs.Williams91
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