Definition:Lever

Definition

A lever is a simple machine consisting of:

a rigid bar $M$

pivoted at a point $F$, called the fulcrum

so that:

an effort applied at one point $E$ of $M$

is transferred to:

a load at another point $L$ of $M$

so as to generate a mechanical advantage.

Type 1

A type $1$ lever is a lever such that the fulcrum is positioned between the effort and the load:

Type 2

A type $2$ lever is a lever such that the load is positioned between the effort and the fulcrum:

Type 3

A type $3$ lever is a lever such that the effort is positioned between the load and the fulcrum:

Also see

• Results about levers can be found here.

Sources

• 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): lever
• 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): lever