Secrets of a free kick David Bechkam

David Bechkam, yes if it would hear a big name that comes to our mind accuracy of his free-kick which is very unusual.Example of a free kick David Bechkam remarkable that always lingered in my memory was when a beautiful goal bechkam England to escape the World Cup.At that time, bechkam kick from a distance of about 30 meters in front of goal.The Greek players have formed a solid wall with the frontBechkam, and coldly executed bechkam kick, kick with speed reaching 128 km / h the ball bounced about 1 meter above the head of the posse, and surprisingly the ball swerved and immediately tore into the Greek goal nets.

Then, how bechkam do? Some observers say that football can Bechkam very accurate free-kick like a genius because his brain can process the complex physics calculations very quickly. Secret Bechkam free kick had been widely received attention from researchers.Gustav Magnus (1852) had conducted a study on a case a moving ball while rotating.We imagine a ball moving, turning, ball movement was causing any air flow around a ball.If the ball spin axis perpendicular to the direction of air flow.Because of the rotation of the ball, the air flow on the side of the ball that moves the direction of air flow (A) is relatively small compared with denganyang moves in the opposite direction of air flow (B). According to Bernoulli, the faster air flows,the lesser the pressure.This will cause the pressure in B is greater than the pressure at A. The pressure difference is what will lead to the pressure difference which is often called the magnus effect.
On a free kick taken at speeds around 110 km / h and rotated with a rotation 10 rev / second, the ball can be turned more than 4 meters.If we see some more, kick Bechkam have sharp curves around the end of the track ball.

Sharp curvature this is often surprising goalkeeper because changes in this direction suddenly.According to a researcher from the UK (Peter Beavrman) magnus effect will be smaller if the speed of the ball is too bigor a slower rotation.So if you want to get big magnus effect, the velocity of the ball must be very fast but the speed should not be too big.When Bechkam to use side-kick with a hard shoe, the ball rotates very fast, high bouncing ball and began to turn because of the magnus force earlier.Friction between the ball with this air will slow the ball movement.If the rotation of the ball has not changed much, this will cause a reduction in speed will result magnus effect grew,thus resulting in a sharp curve ball and tore the opposing goal.

Only Words incredible as I can tell when you see this Bechkam kick.Exceptional accuracy and a very sharp curve ball was certainly able to make the audience sigh.Now, we look forward to only the kicker champ next sniper.