More Viscosity Help


Can someone tell me which is the correct equation for stokes law as ive seen two totally different ones which confuse me alot.

The first is here:

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The Second is here:

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They both seem to be the same apart from the first has a couple of extra varibles in, also if the first equation is the one i should be using, could someone tell me which units everything should be in and what units the answer will be in.

Thanks for any help. Jack

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both equations are correct, the simplier ones are just that, the general case with simplifying choices made & those variables eliminated

Hate to give this answer but.............any consistent set of units will work plug in the values with units, your velocity will come out in some set of units, then convert to your desired velocity units.


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