For the beam shown in Figure $2,$ given $P_1=36kN,P_2=28\mathrm{.}8kN$ and $q=7\mathrm{.}2k\frac{N}{m},$

Figure $2$

Use the following positive sign convention for the internal forces in a beam:

a$)$ Calculate the vertical reaction force at support B$.[1$ mark$]$

Use $\text{'}-\text{'}$ if the reaction force is acting downwards; otherwise, no sign is needed. Do NOT include any units.

Answers to at least $2$ decimal place accuracy in units of $kN$ are required.

Vertical reaction $B_y[kN]=$