A-level Physics/Forces and Motion/Deformation of solids

Hooke's law

$F = k x$

$k = \frac{1}{g r a d i e n t}$

$S t r a i n = \frac{E x t e n s i o n}{O r i g i n a l l e n g t h}$

$S t r e s s = \frac{L o a d}{C r o s s - s e c t i o n a l A r e a}$

$Y o u n g m o d u l u s = \frac{S t r e s s}{S t r a i n}$

$S t r a i n e n e r g y = \frac{1}{2} F x$