PROBLEM 2.40 Three steel rods (E = 200 GPa) support a 36-kN load P. Each of the rods AB and CD has a 200-mm2 cross-sectional area and rod EF has a 625-mm2 cross-sectional area. Neglecting the deformation of bar BED, determine (a) the change in length of rod EF, (b) the stress in each rod.
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