//Example 3-08 Hydrostatic Force Acting on the Door of Submerged car
s = 8 //depth of car door top from the water surface [m]
b = 1.2 //height of car door [m]
h = 1 //breath of car door [m]
rho = 1000 //density of water [kg/m^3]
g = 9.81 //gravitational acceleration [m/s^2]