A rectangular bar 25cm long is 7.5cm wide and 2.5cm thick. It is loaded with an axial tensile load of 20000N, together with a normal compression force of 200000N on force 7.5 x 25cm and a tensile force 40000N on face 2.5 x 25cm. Calculate the alteration in length, breadth, thickness and volume E = 2 × 10^9N/cm² and Poisson ratio, v = 0.3.
