Force Exerted by Contracting or Stretching a Material

Written by Jerry Ratzlaff on . Posted in Classical Mechanics

Force Exerted by Contracting or Stretching a Material

Any strain exerted on a material causes an internal elastic stress.  The force applied on a material when contracting or stretching is related to how much the length of the object changes.

Force Exerted by Contracting or Stretching a Material Formula

\(\large{ F =    \frac { E A l_c  } { l_o  }  }\)         

Where:

\(\large{ F }\) = force exerted

\(\large{ A }\) = origional cross-section area through which the force is applied

\(\large{ E }\) = modulus of elasticity

\(\large{ l_c }\) = change in length

\(\large{ l_o }\) = origional length

 

Tags: Equations for Force