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No friction to measure a distance
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No friction to measure a distance
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LB7
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Ludovic Bavay Ubeda
No friction to measure a distance
«
on:
11/06/2020 11:18:29 »
In the device:
vfb3.png
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I built a device, to measure the distance. I fixed a meter on the red wall. I fixed a meter on the circle. I can move only the circle in one axis in translation and I can rotate it around itself. I can only rotate the red wall. With another people I measured several times the distance like that: one people rotate the red wall slowly, the other people moves the circle in translation and rotates it to follow the millimeters (one millimeter after one) on the rules, I think like the millimeters are tooth of gears. I will add photos after. And what ? the distance is well d2 not d1.
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Last Edit: 11/06/2020 20:05:37 by
LB7
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Ludovic Bavay 19011971 Valenciennes
LB7
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Ludovic Bavay Ubeda
Re: No friction to measure a distance
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Reply #1 on:
11/06/2020 19:52:38 »
it works !!! just need to measure it in reality, you can do the experience ! I'm right !!!
Experience it is what you like no ? It is easy, you need only 30 minutes.
Take a pan lid (inox) for the circle and take a wood rod for the red wall, the friction is enough to have no slip: no energy must be created by friction, I use that experience to measure the distance of rotation of the circle and compare it to the length of the wood between the 2 dots of contact. Move the circle in horizontal translation and rotate the wood rod, that's all: the distance of rotation is EQUAL to d2.
I will post a video.
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Last Edit: 11/06/2020 20:22:07 by
LB7
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