A beam with cross section is subject to a moment of 15 kNm directed parallel to z-axis as shown in Fig 1. Point C is the centroid of the section. Calculate:
(a) The orientation of the major axis (i.e. when moment of inertia or second moment of area is the maximum) (5 marks)
(b) The moment of inertia (or second moment of area) about the major and minor axes (10 marks)
(c) The bending stress at A. Indicate if the stress is tensile or compressive. (10 marks)