고체역학 (Beer) — Pure Bending: Problem 4.122

4.122 Solve Prob. 4.121, assuming that the measured strains are \(\epsilon_A = +600\,\mu\), \(\epsilon_B = +420\,\mu\). (Prob. 4.121 statement: An eccentric force \(P\) is applied as shown to a steel bar of \(25 \times 90\text{-mm}\) cross section. The strains at \(A\) and \(B\) have been measured... Knowing that \(E = 200\text{ GPa}\), determine (a) the distance \(d\), (b) the magnitude of the force \(P\).)