A $2$ m tall rectangular gate $)=(2m$ in the ocean is held in place by a stop as shown in the figure.

Seawater $($density: $1030k\frac{g}{m^3})$ acts against the gate, which is hinged at point $A,$ which is $0\mathrm{.}5$ m below

the surface $)=(0\mathrm{.}5m.$ If the force on the gate is currently $40,900N,$

Determine the vertical distance below the water surface where the resultant force on the gate is

applied. $[15$ points$]$

By $2050,$ sea level rise is expected to increase by $)=(75(cm).$ Determine the change in

force on the gate in $2050.[5$ points$]$

$h=2m$

$=1030k\frac{g}{m^3}$

$d=0\mathrm{.}5$

$f=40900N$