(Solved):   6. A triangular gate with a horizontal base 1.5 m long and an altitude of 2 m is inclined ...

 

6. A triangular gate with a horizontal base 1.5 m long and an altitude of 2 m is inclined 45° from the vertical with the vertex pointing upward. The hinged horizontal base of the gate is 3 m below the water surface. What normal force must be applied at the vertex of the gate to keep it closed? 1.5m 3 m (A) 9.35 kN (B) 10.3 kN (C) 10.9 kN (D) 11.3 kN FF 2 m J fixed wall hinged gate hinge 45° 2 m