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unitF chapter2
vocabulay 13 words
Question | Answer |
---|---|
the result of when a force causes an object to move | work |
a device that changes the amount of force applied | machine |
a simple machine having an arm that moves about a fixed point | lever |
the fixed point on a lever | fulcrum |
the part of a lever on a person applies a force | effort arm |
the part of a lever that that applies a force on an object | resistance arm |
a wheel that has a groove along its edge | pulley |
a central machine that has a central pivot | wheel and axle |
a flat, sloping surface | inclined plane |
a simple machine omposed one or two inclined planes | wedge |
an inclined plane wrapped arond a cylinder or cone | screw |
a device that is made up of two or more simple machines | compound machine |
the raing of the work that comes out of a machine to the workout into that machine | efficency |