고체역학 (Gere) — Stresses in Beams (Basic Topics): Problem 5.5-11

5.5-11 The horizontal beam ABC of an oil-well pump has the cross section shown in the figure. If the vertical pumping force acting at end C is 39 kN and if the distance from the line of action of that force to point B is 4.5 m, what is the maximum bending stress in the beam due to the pumping force?