Q$.$B$1.$

A $20$ m long open channel is shown in Figure Q$.$B$1.$

Figure Q$.$B$1.$ Schematic of the open channel.

i$)$ Determine the hydrostatic pressure force acting on surface BC$,$

ii$)$ Determine the vertical hydrostatic pressure force acting on surface $\backslash ($ C D $\backslash ),$

iii$)$ Determine the resultant hydrostatic pressure force acting on surface $\backslash ($ A B $\backslash ).$

Take density of water as $\backslash (1000\backslash$mathrm$\{$~kg$\}/\backslash$mathrm$\{$m$\}^\{3\}\backslash )$

$(7$ Marks$)$