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Rube G's Favorite
Work and Machines
Question | Answer |
---|---|
comparison of a machine’s work output with work input | efficiency |
product of the force applied on an object through the distance which the object is moved | work |
machine with a bar that pivots on a fixed point | lever |
device that makes work easier by changing the size or direction of a force | simple machine |
machine with two circular devices of different sizes that rotate together | wheel and axle |
machine made of two or more simple machines | compound machine |
the rate at which work is done or energy is transformed | power |
number of times a machine multiplies effort force | mechanical advantage |
machine with a wheel that holds a cable or rope | pulley |
machine that is a slanted surface | inclined plane |
unit for work and energy | joule |
unit for power | watt |
machine that is a moving slanted surface | wedge |
machine that is a slanted surface wrapped around a post | screw |
pivot point on a lever | fulcrum |