Stick-Slip with Chalk

  • #1
373
3
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:
stickslip.png

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?
 

Answers and Replies

  • #2
Andy Resnick
Science Advisor
Education Advisor
Insights Author
7,548
2,158
<snip>What makes it slip though? Because there is a jerk (change in acceleration) due to the difference between static and kinetic frictional forces?
I don't think it's stick-slip behavior, it seems to be more complicated (a "frictional impact oscillator"):

http://www.mate.tue.nl/mate/pdfs/2323.pdf
 
  • Like
Likes Sho Kano and wrobel
  • #3
4
2
can't do that on a dry erase board....just sayin'
 

Related Threads on Stick-Slip with Chalk

Replies
11
Views
4K
Replies
4
Views
33K
Replies
4
Views
2K
Replies
7
Views
835
Replies
11
Views
2K
  • Last Post
Replies
22
Views
6K
Replies
6
Views
462
  • Last Post
Replies
18
Views
15K
  • Last Post
Replies
6
Views
2K
Top