A cube, 4 ft on aside, weighs 3000 lb and floats half-submerged in an open tank as shown...

A cube, 4 ft on aside, weighs 3000 lb and floats half-submerged in an open tank as shown in Fig. P2.17R. For a liquid depth of 10 ft, determine the force of the liquid on the inclined section AB of the tank wall. The width of the wall is 8 ft. Show the magnitude, direction, and location of the force on a sketch.