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Energy lost by speeding car while drinving on a soft surface

  1. Jul 19, 2009 #1
    energy lost by speeding car while drinving on a soft surface
    how much more energy does a car need to continue driving at a constant speed if it sinks 1cm into a soft material.

    car weight 1000kg
    car speed 30mph
    friction is neglected
  2. jcsd
  3. Jul 19, 2009 #2


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    Welcome to PF!

    Hi emusheyev! Welcome to PF! :wink:
    Well, the energy lost goes into deforming the material (rather like rolling resistance, which is mostly the energy lost in deforming the tyres).

    We need to know a lot more about the material to answer the question.

    Did you have a specific material in mind? :smile:
  4. Jul 20, 2009 #3
    i have no material in mind
    but i would like to test with different materials to find which one causes the least energy loss
  5. Jul 20, 2009 #4
    You're going to do the experiment yourself? Sounds interesting =)

    Rubber mats ought to be suitable I think, they're pretty common, and have varying degrees of "softness".
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