Physics Of Javelin Throw. According to the rules set by world athletics, a javelin must weigh a minimum of 800gm and measure between 2.6m and 2.7m. The rotation of the javelin causes air hitting the side of the javelin to increase the air flow over the top of the javelin, decreasing air pressure, and creating lift as described in.

If a thrower is deficient in one of these aspects, she can still be competitive. The first known competitive use of a javelin occurred in the ancient greek olympics, where the javelin throw was a part of the.