A core sample of basalt, 4 inches long and 2 inches in diameter, was tested in unconfined compression. The basalt is known to have a modulus of elasticity = 9.1 x 106 psi.
a) At a pressure of 10,000 psi, what would be the reduction in length of the sample?
b) At this pressure, what would be the vertical load on the sample?
c) At 10,000 psi stress the core showed an increase in diameter of 5.5 x 10-4 inches. What is the Poisson's ratio for this sample?