Question Three $(8$ points$)$: Draw the shear force bending moment diagrams for the simply supported beam

$($pin at A and roller at $C).$ Also, state the maximum shear force, maximum bending moment and their

locations with respect to $A.$ Reminder: The $20kN.m$ couple moment is applied at $B$ and cannot be moved

when considering internal loadings.

$15k\frac{N}{m}$

Step $0$: Extenal forces

$A_x=0$

${\displaystyle \underset{?}{\overset{?}{}}}{M}_A=0$

$-20kN*m-75(2\mathrm{.}5)+cy(5)=0$

$-207\mathrm{.}5+cy(5)=0$

$cy=41\mathrm{.}5kN$

${\displaystyle \underset{?}{\overset{?}{}}}fy=0,cy=41\mathrm{.}5kN$

$Ay-75+41\mathrm{.}5=0,\frac{33\mathrm{.}5}{1}=15$