1. Not finding help here? Sign up for a free 30min 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 forces

  1. Nov 20, 2007 #1

    Hi, I need some help with this exercise because I can't figure out where the friction forces point to.Find the maximum intensity possible for F before any of the blocks start moving, and the acceleration that they acquire once they start to move, if F keeps the calculated intensity.There is no friction in the pulley and the rope can not stretch nor shrink. The coefficients of friction between the blocks and with the floor are in the picture.
  2. jcsd
  3. Nov 20, 2007 #2


    User Avatar
    Science Advisor

    Friction forces always resist (act opposite to) other forces that are parallel to the plane of friction.
  4. Nov 20, 2007 #3

    Doc Al

    User Avatar

    Staff: Mentor

    Friction opposes slipping between surfaces. So figure out which way the surfaces would slip (with respect to each other) if there were no friction--that will tell you which way the friction must act.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Friction forces
  1. Frictional Forces (Replies: 1)

  2. Friction Force (Replies: 3)

  3. Frictional Force (Replies: 6)

  4. Friction and forces? (Replies: 6)

  5. Force and Friction (Replies: 4)