고체역학 (Gere) — Shear Forces and Bending Moments: Problem R-4.5

R-4.5 A T-shaped simple beam has a cable with force P anchored at B and passing over a pulley at E, as shown in the figure. The bending moment just left of C is 1.25 kN·m. The cable force P is approximately: (A) 2.7 kN (B) 3.9 kN (C) 4.5 kN (D) 6.2 kN