Consider a bar 4 meters long, with cross-sectional area varying linearly from .1 m2 at the left end to .2 m2 at the right, with E = 2 105 N/ mm2 . The bar is fixed at the right end and there is an applied force of 3000 N at the left end. There is a distributed load varying linearly from 0 at the middle of the bar to 400 N/m at the right end. Solve for the displacement in the middle of the bar and at the left end