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16 Cards in this Set
- Front
- Back
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work
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force acting over a distance to move and object
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joule
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unit of work and energy
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power
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rate at which work is done
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watt
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unit of power
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machine
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device that makes work easier by changing force and distance or by changing the direction of force
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work input
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work that goes into a machine
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work output
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work that comes out of a machine
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efficiency
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comparison of work input to work output
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mechanical advantage
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number of times a machine multiplies the effort force
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inclined plane
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straight slanted surface that multiplies force
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wedge
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inclined plane that moves
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screw
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inclined plane wrapped around a central bar to form a spiral
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lever
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rigid bar free to move about a single point
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fulcrum
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fixed pivot point of a lever
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pulley
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rope, belt, or chain, wrapped around a wheel
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wheel and axle
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machine made up of two circular objects of different sizes
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