1. Oct 31, 2011 #1

   boyongo

   

   Im doing a balloon problem. The problem states that the volume increases linearly with pressure in the solution manual they that P2/P1=V2/V1 i think that is related linearly but i cant figure how. Can some explain?

    

   boyongo, Oct 31, 2011
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3. Oct 31, 2011 #2

   gneill

   

   Staff: Mentor

   When you write an equation like
   [tex] \frac{V2}{V1} = \frac{P2}{P1} [/tex]
   It's usually because there's a linear relationship like
   [tex] P = k V [/tex]
   that underlies it, where k is some constant of proportionality. When you "stack" the equation, the proportionality constant drops out:
   [tex] \frac{\rlap{\backslash} k V2}{\rlap{\backslash} k V1} = \frac{P2}{P1} [/tex]

    

   gneill, Oct 31, 2011
4. Nov 1, 2011 #3

   boyongo

   

   thank you very much :)

    

   boyongo, Nov 1, 2011

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