A rectangular surface 3′ × 4′, has the lower 3 edge horizontal and 6′ below a free oil surface (sp. gr. 0.8). The surface inclination is 300 with the horizontal. The force on one side of the surface is (where, y = specific weight of water) ?
Correct answer: B
Explanation
The force is calculated using the hydrostatic force formula for a submerged plane surface. Given the dimensions and depth, 48y is the correct result.