Pulleys:A pulley is a simple machine that uses grooved wheels and a rope to use less force.

Lever: this is a pole that you can pull down or up to make something happen.

Wedge:this is a tool that should have more than one slanted side on it.

Wheel and axle:A wheel with a rod, called an axle, through its center lifts or moves loads.

Inclined plane:is a slanting surface connecting to a lower surface or higher.

Screw: is a inclined plane with a pole through it

Formula for medical advantage:p=w/t.    Power=work/time

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