Overview
I'm working on a engineering question and need an explanation and answer to help me learn.
A 2” by 4” rectangular piece of steel, that is 20 feet long between centers of the pins at its ends, is used as the diagonal member in a bridge. If the total tensile load in the steel is 80, 000 pounds and the modulus of elasticity is 30, 000,000 psi, calculate:
a) The tensile stress
b) The total elongation caused by the load