300 mm 250 mm A B -di 40 kN d₂ 1.1 Two solid cylindrical rods AB and BC are welded together at B and loaded as shown. Knowing that the average normal stress must not exceed 175 MPa in rod AB and 150 MPa in rod BC, determine the smallest allowable values of d, and d₂. = 1.2 Two solid cylindrical rods AB and BC are welded together at B and = 30 mm 50 mm and d₂ loaded as shown. Knowing that d₁ find the average normal stress at the midsection of (a) rod A (b) rod BC. 1.3 Two solid cylindrical rods AB and BC are welded together at and loaded as shown. Determine the magnitude of the force P which the tensile stress in rod AB has the same magnitude as compressive stress in rod BC. 10 75 mm 50 mm 120 kN B 30 kN Fig. Pl.1 and P12 label 002 1.8