For the beam shown below,

$2\mathrm{.}1$ Draw the shear$-$force and bending moment diagrams and include all important values.

$(21)$

$2\mathrm{.}2$ Find the maximum shear$-$force and the maximum bending$-$moment values from the diagrams.

$(2)$

$2\mathrm{.}3$ Calculate the point$($s$)$ of contra$-$flexure.

$(7)$

$[30]$