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B How can energy be lost to friction?

  1. Nov 27, 2016 #1
    hi everyone! I'm new here. I was wondering how energy can be lost to friction? How would one even calculate that? Thanks!
  2. jcsd
  3. Nov 27, 2016 #2


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    If a car skids to a stop, what form of energy exists beforehand? Is energy in that form lost during the skid?
  4. Nov 27, 2016 #3


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    Can you explain what is puzzling you? If you slide a box along the ground, any kinetic energy is rapidly lost. That seems an obvious example.
  5. Nov 27, 2016 #4


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    It's the difference in work done by the 3rd law pair of friction forces.
  6. Nov 27, 2016 #5


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    I'm sure you have experienced it yourself. Energy lost to friction turns into heat energy. Have you not felt the brakes on vehicles get warm? Or felt you palm get warm when you rub it on a rough surface?
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