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Grooved wheel with a rope or cable wrapped over it.
 Pulley

two circular objects of different sizes that are attached in such a way that they rotate together
 Wheel and Axle

any rigid rod or plank that pivots, or rotates, about a point.
 Lever

an inclined plane wrapped around a cylinder or post.
 Screw

an inclined plane that moves
 Wedge

a flat, sloped surface
 inclined plane

a combination of simple machines
 Compound Machine

a machine that works with only one movement
Simple Machine

the ratio of the output work to the input work. calculated from this equation
Work_{out }divided by Work_{in } x 100%_{
}
Efficiency (eff)

The ratio of the output force to the input force
Calculated by:
Force(out) divided by Force(in)
Mechanical Advantage (MA)

the force the machine applies
Output Force

the work you apply on the machine
Input Force

how quickly work is done can be calculated by:
work (in joules) divided by time (in seconds)
and is measured in WATTS
Power

Done when a force causes an object to move in the same direction that the force is applied. It is measured in joules
Can be calculated as:
force (in newtons) X Distance (in meters)
Work

