1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Friction force problems

  1. Sep 30, 2005 #1
    Direction of friction force is oppose relative motion of the surface .
    What is relative motion of the surface mean and how to identify the direction of the relative motion of the surface .
  2. jcsd
  3. Sep 30, 2005 #2

    Doc Al

    User Avatar

    Staff: Mentor

    Friction forces always oppose slipping of the surfaces. When sliding does occur, it's easy to find the direction of the friction. If surface B exerts friction on surface A, then you can find the direction of the friction force on A by viewing things from the reference frame of B. If A moves to the left with respect to B, then the friction force on A acts to the right. (Of course, the friction force that A exerts on B is equal and opposite to the friction force that B exerts on A.)
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Friction force problems
  1. Friction forces (Replies: 0)

  2. Frictional Force (Replies: 1)

  3. Frictional force. (Replies: 2)

  4. Frictional force (Replies: 5)