Homework in Fluid Mechanics
Name, Yr. & Sec: ____________________________________________
7
2
1. A rectangular plane surface, 200 3 cm wide and 3 7m deep lies in water in such a way that
its plane makes an angle of 45o with the free surface of water.
a. Determine the total pressure;
b. Determine the position of center of pressure when the upper edge is 75 cm below the
free water surface.
7
2
2. A rectangular plane surface, 2 3m wide and 3 7m deep lies in oil in such a way that its plane
makes an angle of 51.45o with the free surface of oil.
a. Determine the total pressure;
b. Determine the position of center of pressure when the upper edge is 75 cm below the
free oil surface.
3. A circular plate with 30-meter radius is submerged in gasoline. Its greatest and least depths
are below the surfaces being 12 metre and 16 metre respectively. Find:
a. the total pressure on front face of the plate;
b. the position of center of pressure.