Calculate the total elongation of the following structure assuming that PA-50KN, PB-30KN, A1-100mm2, A2=50mm2, L1=200mm, L2=150mm and E-200 000 MPa. PA PB 777 L2 L For the loaded truss shown in Fig. 2 Calculate the internal axial force in the following members CF. 6 m 8.25 KN 5 m 10 KN FCF -20.2 KN FCF-22.25 KN FCF-18.2 KN D&FCF -23.75 KN H B 5 m 5m 15 kN G Figure 2 15 kN F 5 m D E 10 KN 21.75 KN