고체역학 (Beer) — Analysis and Design of Beams for Bending: Problem 5.61

5.61 Knowing that beam $AB$ is in equilibrium under the loading shown, draw the shear and bending-moment diagrams and determine the maximum normal stress due to bending. (From Figure P5.61: The beam $AB$ has a total length of $2.4\text{ ft}$, with a pivot support at the center $C$. A triangularly distributed load of $w_0 = 50\text{ lb/ft}$ at $A$ decreases to $0$ at $C$, directed downwards. A triangularly distributed load starting from $0$ at $C$ increases to $w_0 = 50\text{ lb/ft}$ at $B$, directed upwards. An external torque $T$ is applied at $C$. The cross-section is square with side $a = 3/4\text{ in.}$)