Q2: 60 B 2m P ** 1 pin SECTION 1-1 DETAIL C 2.5 P = 10+x+2y+5z [kN] 2.5cm SECTION BC and AB For the system given in the figure, if the load is acting at point B; a) Check the safety of the bars BC and AB. Note that the cross sections of the bars are identical. b) Calculate change in lengths of BC and AB bars (ALBC=?, ALAB=?) and determine the displacement of point B. c) Based on the connection detail at point C (Detail C and section 1-1), determine appropriate pin diameter to transfer the shear force safely. For the bars: all 14 kN/cm E = 21000 kN/cm For the pin: Tall= 14 kN/cm