Q$4$: The beam ABCD is subject two external loads $($two concentrated external moments and a inclined force$)$ as shown in Figure $4.$

$($a$)$ Draw the shear force diagram $($SFD$)$ with the sign labels and pertinent values. Note that positive shear is along the clockwise direction. $(10$ marks$)$

$($b$)$ Draw the bending moment diagram $($BMD$)$ with the sign labels and pertinent values. Note that bending moment should be drawn on the tensile side. $(10$ marks$)$

Figure $4.$ Simply supported beam under two torces