Spyros A. Kinnas, 1998. This applet shows the change in water level due to rotation of the water in a U-Tube.
Rotation occurs about a vertical axis through the center of the gray shaft.
Equations for this applet come from the behavior of a fluid under radial acceleration. The Original Water Height refers to the height of the water without rotation. Drag the yellow handles to change the Angular Velocity, the Original Water Height, and the axis of rotation. Enter values for Angular Velocity, Original Water Height, and the distance from the center of the tubes to the axis of rotation for more accurate control over the parameters. If you are reading this then your browser is not Java enabled, sorry.