Extracted text: Q1: The horizontal rigid beam ABCD is supported by vertical bars BE and CF and is loaded by vertical forces P, = 400 kN and P, = 360 kN acting at points A and D, respectively (see figure). Bars BE and CF are made of steel (E = 200 GPa) and have cross-sectional areas ABE = 11,100 mm and AcF = 9,280 mm. The distances between various points on the bars are shown in the figure. Determine the vertical displacements A and ốp of points A and D, respectively. 15m-1.5m 2.1 m - BO D P = 400 kN 2.4 m P2 = 360 kN F 0.6 ml