Gate AB is 1 m wide and it is hinged at A. The depth of water is water = 5.5 m and the depth of oil is hoil = 1.7 m. Gauge G reads -0.147 bar and oil of relative density 0.7 is in the right-hand tank. What horizontal force must be applied at B for the equilibrium of gate AB?FB- kN h water water IWS A B G oil h oil