EXAMPLE 1,500 mm 240 mm 360 mm 140 mm, Rigid bar (1) 900 mm Fig. P2.4 2.4 A rigid bar ABCD is supported by two bars as shown in Fig. P2.4. There is no strain in the vertical bars before load P is applied. After load P is applied, the normal strain in rod (1) is -1,200 um/m. Determine: (a) the normal strain in rod (2). fooView