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 Question

  1. Sep 24, 2007 #1
    1. The problem statement, all variables and given/known data
    What concepts am I missing?


    A mass M is initially at rest on a horizontal surface, ms=0.30 and mk=0.20 . A horizontal string then pulls M with a tension T. Forces below are magnitudes.

    Correct Incorrect M will accelerate if T exceeds ukN
    Correct Incorrect N equals Mg
    Correct Incorrect M will accelerate if T exceed usN
    Correct Incorrect T equals usN if M remains at rest
    Correct Incorrect If M does not accelerate, then T less than or equal to usN
    Correct Incorrect The NET force on M (if M does not move) is ukN


    2. Relevant equations



    3. The attempt at a solution

    correct by exceeding the kinetice friction the mass will accelerate
    correct N and mg cancel on a level surface
    correct it will move from rest
    incorrect it could be lower than usN
    correct
    incorrect it would be true for ukn
     
  2. jcsd
  3. Sep 24, 2007 #2

    learningphysics

    User Avatar
    Homework Helper

    I think you have everything right, except the first one...
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Friction Question
  1. Friction question! (Replies: 1)

  2. Question on friction (Replies: 1)

  3. Friction question (Replies: 1)

  4. Friction questions (Replies: 5)

Loading...