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Pressure and tyres

  1. Nov 20, 2009 #1
    1. The problem statement, all variables and given/known data
    Just a quick question: does a fully inflated tyre have the same mass as a tyre that is punctured or uninflated?

    2. Relevant equations

    3. The attempt at a solution
    The one that is fully inflated will have a greater pressure but I am not sure what this will mean in terms of the mass.......
  2. jcsd
  3. Nov 20, 2009 #2


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    Science Advisor

    No, but not much more. The pressure is, of course, because of air in the tire. The fully inflated tire has more air inside it and so has the mass of that air added to the mass of the tire itself. Since air does not have a great deal of mass compared to the tire, the increase in mass is not very much.
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