Question

why falling water attains spherical shape?

Answer 1

I think it tries to minimise the frontal area that air friction works on, and minimise its surface energy. I don't know the exact relation though :) A spherical shape has the lowest surface energy. This would only apply to small droplets though, as big masses of water behave differently and just fall apart into small drops.

Answer 2

In vacuum without gravity, a liquid acquires a spherical shape because it minimises its free surface energy. However, when its falling through air the friction comes in, please check it :)

Answer 3

yeah u r rite man, my search and logic ended in same results, thanks for help:)