Answer:
When liquid is rotated, the forces of gravity result in the liquid forming a parabola-like shape. The most common example is when you stir up orange juice in a glass by rotating it round its axis. The juice level rises round the edges while falling slightly in the center of the glass (the axis).The water shot into the air by the fountain falls back in a parabolic path. A ball thrown into the air also follows a parabolic path.