고체역학 (Beer) — Shearing Stresses in Beams: Problem 6.33

6.33 The built-up wooden beam shown is subjected to a vertical shear of 8 kN. Knowing that the nails are spaced longitudinally every 60 mm at A and every 25 mm at B, determine the shearing force in the nails (a) at A, (b) at B. (Given: \(I_x = 1.504 \times 10^9 \text{ mm}^4\).)