All six simple machine.
There are six types of simple machines and three classes of levers. MA= d1/d2 for all levers.
Levers are a bar that move around a fixed point.
First class levers hav the fulcrum between the effort and resistance.
Second has the resistance between the effort and fulcrum.
Third has the effort between the fulcrum and resistance.
Wheel and axle: wheel attached to an axle. MA=rw/ra
An inclined plane is a sloped plane. MA= l/h
A pulley is a grooved wheel with a rope that rides it. MA= 2N
A wedge is an object with a thick side and skinny side. MA=l/w
A screw is an inclined plane around a cone or cylinder. MA=pi d/ l