Discus throw

The discus throw is an athletics (track and field) throwing event where the
object to be thrown is a heavy with a diameter of 22 cm and a weight of two
kilograms, whereas the women's discus weighs one kilogram.

To make a throw, the competitor starts in a slightly recessed
concrete-surfaced circle of 2.5 metres diameter. They typically begin
swinging the discus, while standing at the rear of the circle facing
opposite to the direction they will throw and then rotate one and half
times, before releasing the discus. The discus must land within a 40 or 60
-degree arc marked by lines on the landing zone, and the competitor must not
leave the circle until the discus has landed. The distance from the circle
to where the discus has landed is measured. The competitor's best throw from
the allocated number of throws is recorded, and the competitor who legally
throws the discus the furthest is declared the winner.

As well as achieving maximum momentum in the discus on throwing, the
discus's distance is also determined by the trajectory the thrower imparts,
as well as the aerodynamic behaviour of the discus.

Discus throwing is an ancient sport. In the 5th century BC the sculptor
Myron produced a statue of a discus thrower (Discobolus), which is
world-famous today.

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