(Solved): (a) Cantilever beam Figure 3 A simply supported beam, AB shown in Figure 3(a) is subjected to a po ...

(a) Cantilever beam Figure 3 A simply supported beam, $$\mathrm{AB}$$ shown in Figure 3(a) is subjected to a point load of $$75\mathrm{kN}$$ and a uniformly distributed load of $$45\mathrm{kN}/\mathrm{m}$$. The beam has a symmetrical I section $$c?c$$ as shown in Figure 3(b). (a) Draw the shear force and bending moment diagram using any suitable methods, State all the principle values. (10 Marks) (b) Determine the magnitude of maximum pure bending stress and state the condition across the section $$c?c$$ at points $$\mathrm{X}$$ and $$\mathrm{Y}$$ in Figure 3(b). Draw the bending stress distribution diagram. (6 Marks) (c) Determine the magnitude of shear stress across the section at $$\mathrm{X},\mathrm{Y}$$ and the Neutral Axis at the section $$c?c$$. (4 Marks)