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Unit F2 Chapter 2
Question | Answer |
---|---|
The result when a force causes an object to move. | Work |
a simple machine that has a central pivot around which a wheel moves. | wheel and axle |
a device that changes the amount of force applied to an object, the direction of a force, or both. | machine |
the part of a lever that applies a force on a object. | resistance arm |
a wheel that has a groove along its edge. | pulley |
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 which a person or another machine applies force | effort arm |
a flat, sloping surface | inclined plane |
a simple machine composed of one or two inclined planes | wedge |
an inclined plane wrapped around a cylinder or cone | screw |
a device that is made up of two or more simple machines | compound machine |
the ratio of the work put into that machine | efficiency |