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unit f chapter 2
Question | Answer |
---|---|
The result when a force causes an object to move. | work |
a device that changes the amount of a force applied to abn object, the direction of a force or both. | machine |
a simple machine having an arm that mover a fix point. | lever |
the fixed point on a lever | fulcrum |
the part of a lever on which person or another machine applies a force | effort arm |
the part of a lever that applies a force on a object. | resistence arm |
a wheel that has a groove along its edge | pulley |
a simple machine that has acentral pivot around which a wheel moves. | wheeel and axle |
a flat, sloping surface | inclined plane |
an inclined plaane wrapped around a cylinder or a cone | screw |
a simple machine composed one or two inclined plane | wedge |
a device that is made up of two or more simple machines | compound machine |
the ratio of the work that comes out of a machine to work put into that machine | efficiency |