3a. 4 kips (1) Axial loads are applied with rigid bearing plates to the solid cylindrical rods shown in the figure below. The diameter of the aluminum rod (1) is 2.00 in., the diameter of the brass rod (2) is 1.50 in., and the diameter of the steel rod (3) is 3.00 in. Draw an axis y with its origin at the location where rod #3 intersects with the fixed base (i.e. the platform). Determine the axial normal loads within each of the three rods, and plot them as a function of distance along y. Also determine the axial normal stress within each of the three rods, and plot the stresses as a function of distance 15 kips along y. 8 kips A 4 kips B 15 kips 20 kips 20 kips C 3b. Is the pattern of internal normal loads and the internal stresses along stresses along y the same or different? Why? D