### Formula

F1

power

L1

power arm

F2

resistance, work

L2

resistance arm, work arm

F1

power

L1

power arm

F2

resistance, work

L2

resistance arm, work arm

A lever is a rigid object that is used with an appropriate fulcrum or pivot point to either multiply the mechanical force (effort) that can be applied to another object or resistance force (load), or multiply the distance and speed at which the opposite end of the rigid object travels. Power arm and work arm are the perpendicular distance between the force and the fulcrum.

L1

F2

L2

F1

Precision

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