고체역학 (Beer) — Stress and Strain—Axial Loading: Problem 2.83

*2.83 A 6-in.-diameter solid steel sphere is lowered into the ocean to a point where the pressure is 7.1 ksi (about 3 miles below the surface). Knowing that \(E = 29 \times 10^6\) psi and \(\nu = 0.30\), determine (a) the decrease in diameter of the sphere, (b) the decrease in volume of the sphere, (c) the percent increase in the density of the sphere.