E A rigid rod ABCD is supported by steel wire AE and CF as shown in Figure Q3. Steel wire AE is made from steel (E = 210 GPa) and steel wire Cpis made from aluminium (E = 70 GPa). The diameters of steel wires AE and CF are 30 mm, respectively. If a vertical load P is applied at D, 450 mm from C, determine: a) Normal stress in steel wire AE. b) Normal strain in steel wire CF. c) Displacement of point D. 300 mm 250 mm B 320 mm F Figure Q3 400 mm 450 mm (4 Marks) (3 Marks) (3 Marks) D P= 50KN