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Static & kinetic friction could cause motion?

  1. Nov 2, 2009 #1
    Static & kinetic friction could cause motion??

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

    I have a question about friction. I was asked to discuss an example where static friction and kinetic friction could cause motion. One example for each. I have never learnt friction causing motion and I thought of it but could not come up with anything that makes sense. I'll appreciate any examples you guys can think of. All I know is friction opposes motion.
    Thanks


    2. Relevant equations



    3. The attempt at a solution
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Nov 2, 2009 #2
    Re: Static & kinetic friction could cause motion??

    A plane would be one example. The friction can make the plane lift off the ground.

    Cheers
     
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