He explained that in javelin throwing the launch is ~2m above ground and the target is at the ground and there are many aspects of aerodynamics involved. The shape and weight distribution of the javelin are such that the centre of gravity is ahead of the centre of pressure. Prof Bhattacharya adds that the angle of attack, wind direction and speed, air temperature, and density also play important roles. Lower air temperature means slightly denser air, which gives slightly more lift that enables a slightly more distance covered. The Javelin throw is a rare event where the IAAF intervened to change rules to force throw distances to be reduced, as changes (based on physics!)

Source: Indian Express August 09, 2021 14:03 UTC