Home/Basic Physics/Equilibrium and elasticity/Normal stress9. Equilibrium and elasticityNormal stressIn 9. Equilibrium and elasticityFormulaCopy LaTeXσ=F⊥A\sigma=\frac{F_\perp}{A}σ=AF⊥Tagselasticityequilibriumequilibrium elasticityphysicsphysics formulaDetailRatio of the perpendicular force to the area on which it acts.Explore the ideaExplore the ideaRelated topicsYoung's modulus and elasticityConventionsPa.Found an error? Contact us.Related formulasRelatedLongitudinal deformationε=ΔLL0\varepsilon=\frac{\Delta L}{L_0}ε=L0ΔLOpen formulaOpen in sectionRelatedYoung's modulusY=σε=F⊥L0AΔLY=\frac{\sigma}{\varepsilon} = \frac{F_\perp L_0}{A\Delta L}Y=εσ=AΔLF⊥L0Open formulaOpen in section