Simple Machines

Lever  

Lever - MA = L (effort arm) / L(resistance arm)

Class 1 lever

Class 2 lever

Class 3 lever

Wheel & axel

MA =r (large wheel )/ r (axle)

Inclined plane

Mechanical advantage = slope length/height

Wedge

MA = Slope Length / Width

Pulley

n = F/L

Screw

Circumference = diameter of the screw x pi

Lever
First class lever
Second class lever
Third class lever
Wheel & axel
Inclined plane
Wedge
Pullry
Screw

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