2.19 Two solid cylindrical rods are joined at B and loaded as shown. Rod AB is made of steel (E = 200 GPa), and rod BC of brass (E = 105 GPa). Determine (a) the total deformation of the composite rod ABC, (b) the deflec- tion of point B. 0.75 mm C B 75 mm 133 kN 133 kN 1.0 m 50 mm A P=178 kN Fig. P2.19