Editing Coriolis force (section)

===Tossed ball on a rotating carousel===
[[File:Coriolis trajectory of a ball on a rotating disc.svg|300px|thumb|'''Left Figure''': The trajectory of a ball thrown from the edge of a rotating disc, as seen by an external observer. Because of the rotation, the ball has both an initial tangential velocity and a radial velocity given by the thrower. These velocities bring it to the right of the center. '''Right Figure''': The trajectory of a ball thrown from the edge of a rotating disc, as seen by the thrower, the rotating observer. It is deviating from the straight line.]]

The figures illustrate a ball tossed from 12:00&nbsp;o'clock toward the center of a counter-clockwise rotating carousel. In the first figure, the ball is seen by a stationary observer above the carousel, and the ball travels in a straight line slightly to the right of the center, because it had an initial tangential velocity given by the rotation (blue arrow) and a radial velocity given by the thrower (green arrow). The resulting combined velocity is shown as a solid red line, and the trajectory is shown as a dotted red line. In the second figure, the ball is seen by an observer rotating with the carousel, so the ball-thrower appears to stay at 12:00&nbsp;o'clock, and the ball trajectory has a slight curve.

{{clear}}