The women's shot in the event of shot put weighs 8.8 pounds. In each competition, athletes usually throw four to six shots. Shots vary in the materials used, and are commonly made out of iron, cast iron, steel, stainless steel and brass. Since the density of the materials is different for each substance, the sizes of shots vary.
Shot put was originally developed by the Greeks in a rudimentary form. The Greek poet Homer mentions that the soldiers competed by throwing rocks during the Siege of Troy, but no dead weights were used. A more modern form of the event originated in the 19th century during the Highland Games in Scotland. Athletes in this event threw either a rounded cube, a stone or a metal weight.
Men's shot put has been in the Olympics since 1896. The women's event was added in 1948. In shot put, there is a circle where competitors shoot from that is 7 feet in diameter, in which the athlete must remain during the shot. The distance of the shot is measured from the inside of the circle to the nearest mark on the field. Athletes must shoot inside a 35-degree angle, or else the shot is disqualified.