We study the flow through a riser which acts as a reducer. The pipe in the riser is $2\mathrm{.}5$ in$.$ and the jet that exits the reducer at B is $2$ in$.$ The flow rate through the system is $270$ gal$/$min with $1$ ft$3=7\mathrm{.}5$ gal. The system $($riser$+$ reducer$)$ and the water within it have a weight of $35$ lb$,$ which acts at G$,$ the center of gravity. Find $(20$ points$)$: $($a$)$ the pressure at B $($b$)$ the reaction force at A $($magnitude and angle from the vertical$)($c$)$ the reaction torque at A$.$