SOLVED I think I solved it by multiplying by (d/dy) and (d/dx) on the equations and subtracting them and everything fell into place. 1. The problem statement, all variables and given/known data http://bayimg.com/kaFnFAAEk [Broken] The question is in the attachment if the img didn't work. I'm stuck at the eliminate the pressure gradient term part. 2. Relevant equations [itex]f=2\Omega sin(\varphi)[/itex] 3. The attempt at a solution I've have my attempt at it in the second attachment.