Here is a curious phenomenon reflected in the next recording. This is a golf ball which gives it a twisting motion in the direction of clockwise and then describes a new secondary rotational movement broader counterclockwise to clockwise.
do that is because this movement in the opposite direction of momentum?
EXPLANATION
In the previous post appeared a phenomenon that occurs when you spin a ball in a hole partially supported. will now be the explanation because the rotation occurs in the opposite side.
EVENT THAT MAKES THE MONEY IN contradiction
If for any reason the ball is no longer fully supported on the circumference of the hole and becomes supported one point then if the coefficient of friction is enough you can start shooting describing a secondary rotation in the opposite direction of rotation of the ball. See the following example.
This movement is produced in the previous video.
SITUATION IDEAL
Among the ball is spinning clockwise and the edges of the hole is spinning on which there is friction, ideally if the surfaces of the ball so the hole is perfectly round the y axis of rotation is perpendicular to the surface of the hole then stop turning the ball quickly to full stop while at no time be fully supported at the edges the hole.
is appreciated that under ideal conditions the velocity at each point of support is the same. Friction occurs strength and opposite direction on the surface of the ball.
it is seen that there is a turning point in the opposite direction of rotation and no net forces on the center of mass that moved from their position.
actual conditions differ from ideal, and the spin axis is perpendicular or objects are perfectly round. Illustration of the spin axis is twisted, in this case components of velocity and friction forces that appear tend to pull the ball from the pocket, making it at some point the ball is supported at one point and can give rise to secondary rotation described above.
However there are other mechanisms by which ball happens to be supported by a single point, the irregularities of the surfaces and forms can cause destabilizing impacts ending position of the ball, do not forget that in the experiment showed a golf ball.
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