a triangular gate with a horizontal base is immersed at an angle of $45$ degrees with the vertical. the vertex of the gate is printing upward and the base is $2\mathrm{.}4$m below water surface. Evaluate the magnitude in $($kn$)$ of the total force acting on one side of the gate. b$)$ obtain the distance of the line of action of the total force from the base of the gate, in meters. c$)$ if the gate is hinged at the base, what force $($kn$)$ normal to the gate is required at the vertex to open it$?$ neglect the weight of the gate