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!

B Stick-Slip with Chalk

  1. May 21, 2016 #1
    What is the physics behind drawing dotted lines with chalk with just one stroke?
    This is a video demonstrating this:

    Here is what I currently have:
    as soon as the applied force exceeds that of the frictional, the block will accelerate. What makes it slip though? Because there is a jerk (change in acceleration) due to the difference between static and kinetic frictional forces?
  2. jcsd
  3. May 21, 2016 #2

    Andy Resnick

    User Avatar
    Science Advisor
    Education Advisor

    I don't think it's stick-slip behavior, it seems to be more complicated (a "frictional impact oscillator"):

  4. Jun 1, 2016 #3
    can't do that on a dry erase board....just sayin'
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted