고체역학 (Gere) — Shear Forces and Bending Moments: Problem 4.3-8

4.3-8 At a full draw, an archer applies a pull of 130 N to the bowstring of the bow shown in the figure. Determine the bending moment at the midpoint of the bow. [Given dimensions: vertical height between tips = 1400 mm, horizontal distance from midpoint (grip) to the line connecting the tips = 350 mm, angle between the horizontal arrow line and the bowstring = 70°]