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force acting through a distance


rate at which work is done, or the amount of work per unit of time.


The unit of power


An instrument that makes work easier

Work Input

The work that goes into the machine.

Work Output

The work done by the machine.


The comparison of work output to work input.

Mechanical Advantage

The number of times a machine multiplies the effort force.

Inclined Plane

An example is a ramp.


an inclined plane that moves.


An inclined plane wrapped around a central bar.


a rigid bar that is free to pivot, or move about a fixed point.


The fixed or pivotal point on a lever.


a rope, belt, or chain wrapped around a grooved wheel.

Wheel and Axle

Simple machine made up of two circular objects.

Compound Machine

A combination made up of two or more simple machines.

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