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When a force causes an object to move in the same direction that the force is applied
Work
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The rate at which work is done
Power
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The force you apply on an object
Input Force
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The work that the machine does
Output force
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The ratio of the output force to the input force and can be calculated from this equation
Mechanical Advantage
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Ratio of the output work to the input work
Efficiency
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A machine that does work with only one movement
Simple Machine
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A machine made of a combination of similiar machines
Compound Machines
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A flat, sloped surface
Inclined plane
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An inclined plane that moves
Wedge
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Any rigid rod or plank that pivots or rotates about a point
Lever
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Two circular objects of different sizes that are attached in such a way that they rotate together.
Wheel and axle
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A grooved wheel with a rope or cable wrapped over it
Pulley
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