A cantilever beam of uniform section and of length / carries two concentrated loads: W at free end and 2 W at a distance 'a' from the free end. Determine the deflection under the load 2W. If the cantilever is made from steel tube of circular section of 100 mm external diameter and 6 mm thickness and length 1.5 m, a' =0.6 m, determine the value of W so that the maximum bending stress is 140 MPa. Calculate the maximum deflection for the loading. Young's modulus of elasticity (E) = 200 GPa (10)