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 eng442 Jan29-13 02:33 PM

Final volume of a falling droplet

First of all, do falling droplets have a final volume like falling bodies have a final velocity - in air?

If so, is there a way to determine such volume for a specific liquid and a specific height? More specifically, the final volume of a semen droplet falling from a 1km height.

 tiny-tim Jan29-13 03:03 PM

welcome to pf!

hi eng442! welcome to pf! :smile:

water is, for all practical purposes, incompressible

so (although the shape may change) the volume will be constant :wink:

 Andy Resnick Jan29-13 07:35 PM

Re: Final volume of a falling droplet

Quote:
 Quote by eng442 (Post 4248582) More specifically, the final volume of a semen droplet falling from a 1km height.
Eh?

There will be some evaporation, but that depends on the details- temperature(s), relative humidity, etc..

Odd question....

 Spinnor Jan29-13 07:55 PM

Re: Final volume of a falling droplet

Quote:
 Quote by eng442 (Post 4248582) First of all, do falling droplets have a final volume like falling bodies have a final velocity - in air? If so, is there a way to determine such volume for a specific liquid and a specific height? More specifically, the final volume of a semen droplet falling from a 1km height.
I have never seen rain drops the size of breasts, even small breasts, though possibly the size of a nipple. So yes, if you could form a very large drop of water, say the size of your typical breast then after falling for a kilometer the large drop would break apart towards some maximum size. If on the other hand you had a cubic kilometer of water and could drop it a distance of one kilometer, all at once, I think you might have some very large drops?

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