A 10 m-high, 5 m-wide rectangular plate blocks the end of a deep freshwater channel of H=1.5 m, as shown in the Figure. The plate is hinged about a horizontal axis along its upper edge through a point A and is restrained from opening by a fixed ridge at point B. Determine the force exerted on the plate by the ridge in kN. V H B a. 52.42219 O b. 198.6525 O c. 140.5078 O d. 340.08 e. 265.3809