One end of a T-beam of uniform cross-section is embedded in a rigid wall and loaded by a distributed load as shown in Fig. Q3. (a) Construct, and properly label the shear force and moment diagrams for the loaded beam. (10 marks) (b) Determine the area moment of inertia of the T-section. (5 marks) (c) Determine the stress state at a point P on the cross-section, which is located 1.0 m from end B. (10 marks) (d) Using Mohr's circle, determine the principle stresses and the maximum shear stress, as well as their orientations at point P. (10 marks) 2.6 m Fig. Q3 15 kN/m B 140 mm. 60 mm T 140 mm 60 mm 20 mm 20 mm