# Homework Help: Reynolds Transport derivation?(or 1-form Stokes)

1. Apr 29, 2010

### joob

1. The problem statement, all variables and given/known data
The latex document for these equations wasnt updating correctly, so Ive included them as an attachment whereever there is a ... in the text

Ok, Im trying to understand the Reynolds transport theorem, but i dont understand part of it.

2. Relevant equations
This is the actual equation Im specifically interested in:
...
3. The attempt at a solution
Now I know one term would be just the chain rule for f(phi)

...

, but Im not sure how the derivative works for the other term to lower the order to a surface derivative.
From texts I found, I guess the answer should be something like,

...

but I dont really understand how to explicity take the derivative of the integral to lower the order.

#### Attached Files:

• ###### reynoldstransport.pdf
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Last edited: Apr 29, 2010