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Homework Help: Pascals Law Problem Help :P

  1. Mar 7, 2012 #1
    Pascals Law Problem

    1. The problem statement, all variables and given/known data

    You have a vehicle with four tires of 20 cm wide with 2 atm air pressure. Calculate
    contact area (cm^2) of each tire on the road. The gross vehicle weight is 1 tonne.


    2. Relevant equations

    P=F/A
    P=ρgh

    3. The attempt at a solution

    F=mg=1x10^6x9.8=9.8x10^6

    A=F/P
    therefore, A=(9.8x10^6)/200000=49m^2

    I am not sure if I am right so far,

    can u assist me if I am incorreect

    cheers
     
    Last edited: Mar 7, 2012
  2. jcsd
  3. Mar 7, 2012 #2
    Is this method of calculation correct?
     
  4. Mar 7, 2012 #3

    gneill

    User Avatar

    Staff: Mentor

    Re: Pascals Law Problem

    That's a lot of kilograms for a tonne! tonne = 103 kg.
    The method is okay for finding the total contact area. Just fix the tonne value.
     
  5. Mar 7, 2012 #4
    ooh thnx gneil much appreciated
     
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