Written by Jerry Ratzlaff on . Posted in Classical Mechanics

Stress, abbreviated as \(\sigma \) (Greek symbol sigma), is the force per unit area of cross-section.  The maximum stress of a material before it breaks is called breaking stress or ultimate tensial stress.

Stress formula

\(\large{ \sigma = \frac{F}{A} }\)


\(\large{ \sigma }\)  (Greek symbol sigma) = stress

\(\large{ A }\) = cross-section area

\(\large{ F }\) = force

Solve for:

\(\large{ A = \frac{F}{\sigma} }\)

\(\large{ F = \sigma \; A }\)


Tags: Equations for Strain and Stress