Mechanical advantage

Gives the factor by which a machine or tool multiplies an input force, found as the ratio of the load force to the effort force. It is used to judge how much a lever, pulley, or other simple machine helps lift or move a load.

\mathrm{MA} = \frac{L_F}{E_F}

What the symbols mean

mechanical advantage (dimensionless)
load force, the force exerted by the machine on the load (newtons)
effort force, the force applied to the machine (newtons)

About this formula

  • FieldPhysics
  • TopicClassical mechanics
  • LevelHigh school
  • Also calledforce amplification, force multiplier, load over effort, machine force ratio, lever advantage, pulley mechanical advantage
  • SourceWikidata Q5378501

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