Two solid cylindrical rods AB and BC are welded together at B and loaded as shown. Knowing that P = 36 kips, determine the average normal stress at the midsection of rod AB and rod BC. (Round the final answers to two decimal places.) 3 in. 2 in. 30 kips 30 kips 40 in. 30 in. The average normal stress at the midsection of rod AB is ksi. The average normal stress at the midsection of rod BC is ksi.