A Flat Plate of Negligible Thickness Is in the Shape

Short Answer

A flat plate of negligible thickness is in the shape of a right triangle with base 5 ft and height 10 ft. The plate is submerged in a tank of water. Find the force on the face of the plate under the following conditions: (Use 62.4 lb/ft³ as the density of water.)
(a) The plate is submerged horizontally so that it rests flat on the bottom of the tank at a depth of 14 ft.(b) The plate is submerged vertically, base edge up and base at a depth of 3 ft.