Dot Physics

Mardi Gras Physics

Do you need some physics to go with your beads? Well, here it is. Actually, I will let you do the physics (for now – meaning if you don’t analyze these, I will).

Here are some pictures of a broken strand of beads. I hung them on my fence – you know, for display. Click the image to get a larger analyzable version. Oh – I just happened to include a meter stick in the image. Also, just for show I included a level (that is level).




Now, I have two videos. In both of these videos, I again included a meter stick. You know…because I like meter sticks. Also, I am posting these videos on vimeo primarily because you can download by default from vimeo without any tricks.

Bead Physics 1 from Rhett Allain on Vimeo.

Bead Physics 2 from Rhett Allain on Vimeo.

PS: Don’t forget about Tracker Video. If you analyze any of this stuff, I would love to hear what you find.


  1. #1 CalcDave
    February 16, 2010

    Perfect for a Dan Meyer “WCYDWT.”

  2. #2 IBY
    February 16, 2010

    You are trying to provide examples of catenary on the picture above, eh? I have been trying to derive the equation for quiet a while now, but it is killing me.

  3. #3 Alex Besogonov
    February 17, 2010