고체역학 (Beer) — Transformations of Stress and Strain: Problem 7.152

7.152 A single strain gage is cemented to a solid 4-in.-diameter steel shaft at an angle \(\beta = 25^\circ\) with a line parallel to the axis of the shaft. Knowing that \(G = 11.5 \times 10^6\) psi, determine the torque \(T\) indicated by a gage reading of \(300 \times 10^{-6}\) in./in.