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# PS Ch 5 Vocab Kacey

### Sections 1, 2, & 3

The amount of work done in one second Power
The transfer of energy that occurs when a force makes an object move Work
Device that makes doing work easier by increasing the force applied to an object, changing the direction of an applied force, or increasing the distance over which a force can be applied Machine
Force that is applied to the machine Input Force
Force applied by the machine Output Force
Ration of the output force to the input force Mechanical Advantage
Ratio of the output work done by the machine to the input work done on the machine, expressed as a percentage Efficiency
machine that does work with only one movement-- lever, pulley, wheel and axle, inclined plane, screw, and wedge simple machine
simple machine consisting of a bar free to pivot about a fixed point called the fulcrum lever
simple machine that consists of a grooved wheel with a rope, chain, or cable running along the groove; can be either fixed or movable pulley
simple machine that consists of a shaft or axle attached to the center of a larger wheel, so that the shaft and the wheel rotate together wheel and axle
simple machine that consists of a sloping surface, such as a ramp, that reduces the amount of force needed to lift something by increasing the distance over which the force is applied inclined plane
simple machine that consists of an inclined plane wrapped in a spiral around a cylindrical post screw
simple machine that is an inclined plane with one or two sloping sides wedge
machine that is a combination of two or more simple machines compound machine
Created by: Kacey Jones