Storing Cookies (See : http://ec.europa.eu/ipg/basics/legal/cookies/index_en.htm ) help us to bring you our services at overunity.com . If you use this website and our services you declare yourself okay with using cookies .More Infos here:
https://overunity.com/5553/privacy-policy/
If you do not agree with storing cookies, please LEAVE this website now. From the 25th of May 2018, every existing user has to accept the GDPR agreement at first login. If a user is unwilling to accept the GDPR, he should email us and request to erase his account. Many thanks for your understanding

User Menu

Custom Search

Author Topic: Gilles new SMOT ramp, breaks sticky spot at the end design of video  (Read 5442 times)



Zonk

  • Newbie
  • *
  • Posts: 8
Re: Gilles new SMOT ramp, breaks sticky spot at the end design of video
« Reply #2 on: November 30, 2009, 09:33:47 AM »
Take a longer glass plate without any magnets as a declining ramp and you will get the same result! The problem here is, that the difference in potential energy between the starting point end the end position is used to overcome the sticky point.

Zonk

mscoffman

  • Hero Member
  • *****
  • Posts: 1377
Re: Gilles new SMOT ramp, breaks sticky spot at the end design of video
« Reply #3 on: December 01, 2009, 05:14:42 PM »

Neat;

Experiments should be performed that use the runner's momentum
to translate to another path, so the runner does not need
to go through the array in reverse, to get back to beginning.
That's the real experiment.

:S:MarkSCoffman

quartz

  • Full Member
  • ***
  • Posts: 115
Re: Gilles new SMOT ramp, breaks sticky spot at the end design of video
« Reply #4 on: December 01, 2009, 05:23:00 PM »
Bonsoir à tous, :D

Belle réalisation Gilles, tu nous à encore fait du travail de pro,
Te prépares tu à boucler le machin ??

A+

Cloxxki

  • Hero Member
  • *****
  • Posts: 1083
Re: Gilles new SMOT ramp, breaks sticky spot at the end design of video
« Reply #5 on: December 01, 2009, 11:21:51 PM »
Gravity indeed needs to be compensated. Add an upward ramp just like he downward one, to come level with the starting position. If the object rolls up it, with velocity to spare, permanently out of reach of already passed magnets, we got OU, as it could just as well start a new pass on an identical smot. Yet, the object seems to roll down the ramp a bit withheld...

gyulasun

  • Hero Member
  • *****
  • Posts: 4117
Re: Gilles new SMOT ramp, breaks sticky spot at the end design of video
« Reply #6 on: December 02, 2009, 10:43:11 AM »
Gravity indeed needs to be compensated. Add an upward ramp just like he downward one, to come level with the starting position. If the object rolls up it, with velocity to spare, permanently out of reach of already passed magnets, we got OU, as it could just as well start a new pass on an identical smot. Yet, the object seems to roll down the ramp a bit withheld...

I think the withheld down-roll is intentional by Gilles,  the ramp's material seems copper covered lamination (printed circuit board?) and the rolling object induces eddy currents in the copper below it (the rolling object also includes cylinder magnets, does not it) so the down rolling is breaked by Lenz law.

Possible reason for this break is to save the rolling object from falling apart like earlier when it escaped from the sticky spot, it falled down and got apart.

rgds, Gyula

Cloxxki

  • Hero Member
  • *****
  • Posts: 1083
Re: Gilles new SMOT ramp, breaks sticky spot at the end design of video
« Reply #7 on: December 02, 2009, 12:18:05 PM »
Slowing an object down is easy enough to do. I don't see the point for it here. Wouldn't he want to loop the smot? Let the object roll up higher than it started with velocity zero, and you've got the holy grail. Yet, he chooses to let it roll down, slowly. Lots of energy transfers and drama, resulting in a loss. Like a soccer match ending in -1 vs -1. Who wins? In the search for OU, even if there is no loss, no points are rewarded for "remise" games, right?