i. Let,
L = original length
l = increase/decrease in length
D = original diameter
d = change in diameter
ii. The ratio of change in dimensions to original dimensions in the direction of the applied force is called linear strain.
Linear strain = \(\frac{l}{L}\) …. (1)
iii. The ratio of change in dimensions to original dimensions in a direction perpendicular to the applied force is called lateral strain.
Lateral strain = \(\frac{d}{D}\) ….(2)
iv. Poisson’s ration,
