why javelin thrower rubs powder on his arm
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Answered by
5
To increase friction. So that the ball go in the direction in which he/she throws.
Answered by
7
They do so, so that they have more grip on the javelin. As the friction increases after applying the powder, it helps them to have more grip and throw it more far. Also, it can turn dangerous if they don't have grip on their javelin.
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