Principle of Lever
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Physical Law
- $\operatorname{MA} = \dfrac {F_B} {F_A} = \dfrac a b$
where:
- $\operatorname{MA}$ is the mechanical advantage of the lever
- $F_A$ is the force applied to the lever at point $A$
- $F_B$ is the resulting force that the lever applies at point $B$
- $a$ and $b$ are the distances from the fulcrum to points $A$ and $B$.
Historical Note
The principle of the lever was discovered by Archimedes of Syracuse.