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Vocab 3
Term | Definition |
---|---|
Fulcrum | A fixed point on a lever |
Inclined Plane | a slanted surface along which a force moves an object to a different elevation |
Input Force | the force applied to a machine |
Output Force | the force a machine applies to accomplish a tash |
Energy | The ability to do work |
Work | the quantity of force times distance |
Power | the rate at which work is done (w/t) |
Mechanical advantage | the ratio of a machines output force to input force |
Wheel and Axle | a simple machine made of two attached discs or cylinders, each with a different elevation |
Lever | A stiff rod or bar that rotates around a fixed point |
Simple Machine | a device that makes work easier by changing the size of the force, the direction of the force, or the distance over which the force is applied |
Efficiency | the ratio of a machines out work to input work |