Problem No. 2 (Figure 2) The built-up wooden beam shown is subjected to a vertical shear of 8 kN. Knowing that the nails are spaced longitudinally every 75 mm at A and every 50 mm at B, determine the shearing stress in the nails (a) at A, (b) at B. Each nail has a diameter of 10- mm. Figure 2. A 50 30 mm 50 400 300 50 B A 100 50 A 200 B Dimensions in mm