I have seen toys in which a disk is set into rotation by stroking its
axle; I have noticed very quickly rotating bicycle wheels on bikes being
carried on cars . . . I have no quantitative models, but the following
Goggle-snip may lead somewhere:
http://www.mit.edu/people/pap/Patpage/patpage.htm contains the following
assertion which may be of interest:
"VIR, or Vibration-Induced Rotation. I am currently applying for a patent
of this idea, and if it is granted I will own exclusive rights! Although
the patent has been filed, I would rather not disclose the concept on the
internet. This was the subject of my Bachelor's thesis and the recipient
of the second place in the DeFlorez design competition. Contact me for
details"
Bob Sciamanda (W3NLV)
Physics, Edinboro Univ of PA (em)
trebor@velocity.net http://www.velocity.net/~trebor
----- Original Message -----
From: "Jim Green" <JMGreen@SISNA.COM>
To: <PHYS-L@lists.nau.edu>
Sent: Friday, October 04, 2002 2:32 PM
Subject: Have a Physics Question
|. . .
| heard if he has an explanation yet. I've seen this before, although I
| can't offer any examples. I don't think the force comes specifically
from
| the string. I think it has everything to do with the vibration. I
think
| you would see the same thing if you had a wheel (or any round item) on
an
| axle that is vibrating, say a washer . . .
---
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