Coefficient of friction due to water

[spri4]

I wasnt able to find anything on the internet, so maybe someone else can help. I need to know the coeifficient of friction due to water. Like say a submarine is being pulled by something through the water and what i need to know is what would the friction be for the submarine (if there is a universal number for friction by water) or how to solve for it. I am in 11th grade so hopefully the answer isn't too complicated.

 

[Cyrus]

Thats going to be next to impossible for you to find. Its not a simple friction problem, but a complicated fluid dynamics problem. This is a very, very, very, tough problem.

 

[tiny-tim]

Hi spri4! Welcome to PF!

Basically, friction is where the thing you're rubbing against stays where it is.

But when you move through a fluid (treacle, water, air, …), you drag some of the fluid with you. That's called viscosity, of course.

You need the viscosity, not the friction!

(You could try: http://en.wikipedia.org/wiki/Viscosity - but I don't recommend it! )

 

[spri4]

Thanks.