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Simple Machines Unit

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