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Re: [Phys-L] fidget spinner: UFO data of 9/22

On 9/22/2017 3:16 PM, bernard cleyet wrote:
/snip/ posted the data from the “UFO” spinner. I glued a paper tab on the edge of the UFO, so only one “lobe”. Used time 1. i.e. time is one rev. The last column is the interuppted time.

Here's an unphysical model of UFO as [bc9/22 Plot]
(https://i.imgur.com/D2t7Ybf.jpg)

The residuals are peculiar - given as
[BC 9/22 residuals of model]
(https://i.imgur.com/GDSnEIm.jpg)

The photogate times are steppy, see
[bc 9/22 plot of photogate times 30:60]
(https://i.imgur.com/nojJ7mv.jpg)

The periodic times were plotted here, as
 [bc 9/22 Plot of periods only]
(https://i.imgur.com/DDKFSyO.jpg)

Brian W