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Calculation of friction

  1. Feb 10, 2016 #1
    How can we calculate the friction between the wheels and the surface in contact? I know that big wheels will have a greater friction, but what is the formula to calculate it?
     
  2. jcsd
  3. Feb 10, 2016 #2

    jbriggs444

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    What source tells you that big wheels have a greater friction? And what dimension of "big" do you have in mind -- width, diameter, size of contact patch, weight?
     
  4. Feb 10, 2016 #3
    The friction I refer to is the friction per revolution of the wheel. The "big" refers to the diameter of the wheels, with the same width.
     
  5. Feb 10, 2016 #4

    jbriggs444

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    Friction is normally measured in units of force. How does that make sense in describing friction "per revolution"?
     
  6. Feb 11, 2016 #5

    CWatters

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    Do you mean friction or rolling resistance?
     
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