Question $2.$ A water reservoir features an inclined gate, hinged at point $"$A$"$ as depicted in the figure. Given that the gate's

width is $1\mathrm{.}5$ meters, determine the force necessary at point $"$B$"$ to keep the gate closed.

$10\%$ mark will be awarded for clear, professional, and succinct presentation of the work $($pro rata of the work done$).$

Important: Indicate clearly, but succinctly, the procedure that you have followed to obtain the results.