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18 Cards in this Set
- Front
- Back
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Work
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a force used to move an object; where the force and the motion of the object are in the same direction
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Power
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the rate at which work is done
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Watt
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the unit of measure for power
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Newton
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the unit of measure for force
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Joule
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the unit of measure for work
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Simple Machines
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devices made to make work easier
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Mechanical Advantage
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the increase of magnitude of an input force
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Lever
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a simple machine consisting of a bar rotating on a fulcrum
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1st Class Lever
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the lever where the fulcrum is in the middle
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2nd Class Lever
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the lever where the resistance is in the middle
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3rd Class Lever
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the lever where the effort is in the middle.
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Wheel and Axle
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a simple machine where an axle is connected to a wheel
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Pulley
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A grooved wheel that turns in a block frame
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Fixed Pulley
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A pulley that does not rise or fall with the load being moved
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Moveable Pulley
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A pulley that rises and falls with the load being lifted
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Inclined Plane
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An even sloping surface that makes it easy to move from a low position to a higher one
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Wedge
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A simple machine consisting of one or more incline planes used to separate or devices
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Screw
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A simple machine consisting of an incline plane wrapped around a shaft
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