This paper introduces the main energy saving technologies of centrifugal pump.And the author proposes a new energy saving technology which is called prerotation regulated by the inlet guide vane.
But the earth isn't spherical - it's spinning, so bits closer to the equator are 'thrown out' by centrifugal effects, and the poles get squashed in a bit.
For this to work, the counterweight would need to be far enough away that the centrifugal force generated by the Earth's spin is greater than the planet's gravitational pull.
During these periods, centrifugal force reduces the normal flow of blood to the pilot's brain. At high speeds, loss of control of the aircraft has proved deadly for many pilots.
Centuries ago, botanists noticed that an upside-down seedling would always reorient its parts, and that plants grown on a spinning wheel would point their roots in the direction of centrifugal force.
Gravity gets weaker with distance, so–being a bit farther from the center of the Earth plus that small centrifugal pull makes gravity at the equator about...drumroll please...0.5% weaker than at the poles.
But when you spin it around really fast for a couple minutes, the centrifugal force pushes all the heaviest particles to the outside and they displace the less dense particles towards the middle.