Question $3$

A load of $90kN$ is applied at point B of a simply supported beam ABC as shown in Figure Q$3($a$).$ The cross section of the beam e$-$e is displayed as in Figure Q$3($b$).$

Answer the following questions:

i$.$ Find the neutral axis $(\frac{?}{\text{b}\text{a}\text{r}}(y))$ of the beam and its second moment of area $(I_{NA}).$

$(2$ marks$)$

ii$.$ Calculate the transverse shear stress $()$ at its neutral axis at the section with the highest transverse shear load.

$(4$ marks$)$

iii. Determine the transverse shear stress at point $D$ and $E$ as in Figure Q$3($b$)$ at the section with the maximum transverse shear load.

$(4$ marks$)$

Simply Supported Beam ABC

$($a$)$

Cross Section e$-$e

$($b$)$

Figure Q$3$