//Example 3-13 Rising of Liquid During Rotation
D = 20 //diameter of cylinder [cm]
H = 60 //height of cylinder [cm]
h_0 = 50 //height of liquid in the container [cm]
rho = 850 //density of liquid in the container [kg/m^3]
g = 9.81 //gravitaional acceleration [m/s^2]