- #1
Vriska
- 138
- 2
Homework Statement
as title
Homework Equations
force exerted by atmosphere on bubble = 2(on account of dual layer) * 2pi*r*L(surface tension)
work is the integral of force *dx
The Attempt at a Solution
so we're looking at int ( 4pi*r*L *dr) but since not it 1 particle is traveling against atmospheric force rather a hole bunch in a bubble dr = 2pi*r*dr. (broke the dimensions :(, what else should i do?)
so now we have :
integral (8 pi^2*r^2*L*dr)
This is ofc the wrong answer. I want to do it this way instead of using the "surface energy". If i just used dr I'd be implying only one particle is moving against the atmosphere which is wrong.