Date: Thu, 10 Nov 2011 23:48:11

Author: --- Erich Burton

Subject: Re: Visual accelerometer?

Post:

If you limit your acceleration to a horizontal plane, a 2D liquid
accelerometer might work. Either a simple trough or a suspended
ping pong ball in an inverted flask. Works OK for rotation, but not
for free fall.

https://store.schoolspecialty.com/OA_HTML/ibcGetAttachment.jsp?cItemId=499909

http://buphy.bu.edu/~duffy/mech/1G20_76.html

How about if you replace the string attached to the ping pong ball
with a spring?

On Thu, Nov 10, 2011 at 11:19 PM, Paul Nord wrote:
> I've been thinking about making a video with an accelerometer in the shot.
> It would be nice to have some simple reference to indicate that the camera
> is in an accelerated reference frame. The first idea was the idealized mass
> in the center of a cube attached by 6 springs. But I don't think that's a
> practical build since it would be rather touchy; it would oscillate, and
> probably couldn't be designed to show a large range of accelerations.
[...]


-Erich

--
Erich Burton 3-2602 eburton@bu.edu
Boston University Physics Department



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