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Theme Changer

 Topic: Uphill rolling thingy

 (Read 4817 times)
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  • Re: Uphill rolling thingy
     Reply #30 - November 27, 2011, 09:37 PM
    I can't really remember, I just remember that I never understood them, so it seems logical that they might be the answer to something else I don't understand.

    Okay, fuckit -  back to invisible fairies.   Tongue
    "Befriend them not, Oh murtads, and give them neither parrot nor bunny."  - happymurtad's advice on trolls.
  • Re: Uphill rolling thingy
     Reply #31 - November 27, 2011, 09:38 PM
    I'm gonna move this to teh sciency board, coz this stuff gets really sciency. dance
    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: Uphill rolling thingy
     Reply #32 - December 07, 2011, 01:56 AM
    I would guess there is a strong relationship between the angle of inclination of the slope, with the mass and/or proportion of the cones and how sharply the two rails diverge.

    ie If you increased the incline or narrowed the rails you would need a heavier (larger?) cone to achieve the same effect, or it would just roll the same way. Might give it a try sometime.

    I suggest there is a 'tipping point' where there is some kind of optimal co-efficient where the effect doent occur unless certain variables fall with a relatiely small window boundaries.

    Just a guess.

    Sounds like a question for the maths/mechanics guys to answer it must be some kind of conbination of the laws of motion.

    Whatever it is, I dont think Newton need be worried :-)

    Either that or God Did It!
    I am better than your god......and so are you.

    "Is the man who buys a magic rock, really more gullible than the man who buys an invisible magic rock?.......,...... At least the first guy has a rock!"
  • Re: Uphill rolling thingy
     Reply #33 - December 07, 2011, 06:08 AM
    Quote from: Adey5 on December 07, 2011, 01:56 AM
    I would guess there is a strong relationship between the angle of inclination of the slope, with the mass and/or proportion of the cones and how sharply the two rails diverge.

    Yup.

    Quote
    ie If you increased the incline or narrowed the rails you would need a heavier (larger?) cone to achieve the same effect, or it would just roll the same way. Might give it a try sometime.

    You would need a steeper taper on the cone. The actual weight of the cone isn't relevant.
    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: Uphill rolling thingy
     Reply #34 - December 07, 2011, 08:06 PM
    Thanks Osmanthus, so the weight of the cone is irrelevant? It the mass relevant? my knowledge of mechanics didnt really cover this, and it was over 20 years ago anyway. But glad to know I am at least in the ballpark.

    I will leave this to you to explain in more detail.

    RESPECT!!
    I am better than your god......and so are you.

    "Is the man who buys a magic rock, really more gullible than the man who buys an invisible magic rock?.......,...... At least the first guy has a rock!"
  • Re: Uphill rolling thingy
     Reply #35 - December 07, 2011, 08:11 PM
    On Earth, weight and mass are the same.
    osmanthus waits for SC to go batshit. Cheesy
    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: Uphill rolling thingy
     Reply #36 - December 11, 2011, 02:58 PM
    ooops sorry, forgive my ignorance. Roll Eyes
    I am better than your god......and so are you.

    "Is the man who buys a magic rock, really more gullible than the man who buys an invisible magic rock?.......,...... At least the first guy has a rock!"
  • Re: Uphill rolling thingy
     Reply #37 - December 11, 2011, 03:00 PM
    Was that a really embarrassing howler on my part?

    Who is SC anyway?
    I am better than your god......and so are you.

    "Is the man who buys a magic rock, really more gullible than the man who buys an invisible magic rock?.......,...... At least the first guy has a rock!"
  • Re: Uphill rolling thingy
     Reply #38 - December 11, 2011, 05:49 PM
    In this case three variables are of importance:
    - the angle of the double cone;
    - the upward angle of the rails;
    - the sideway angle of the rails

    The values of these variables make the cone run "up", "Down" or stay in its place. Sorry I don't have time to make an equation.
    Religion is organized superstition
  • Re: Uphill rolling thingy
     Reply #39 - December 14, 2011, 02:35 AM
    Hi, thanks for the answer Hallakuf. I imagine that there is a limited range of co-efficient between the relationship of these variables, beyond which this phenomenon, no longer occurs.


    How am I doing?  Huh?
    I am better than your god......and so are you.

    "Is the man who buys a magic rock, really more gullible than the man who buys an invisible magic rock?.......,...... At least the first guy has a rock!"
  • Re: Uphill rolling thingy
     Reply #40 - December 14, 2011, 06:03 AM
    Think of it like this. The double cone is not actually rolling uphill, if you consider its centre of mass.

    The geometry of cones and rails has to be arranged so that, when viewed directly from the side, the cone's centre of mass gets lower (relative to the horizontal/ centre of the earth/whatever) when the cones rolls "uphill".

    IOW, it only works if the cone really is rolling downhill as far as gravity is concerned. Any arrangement of cone and rails will work as long as it allows the cone's centre of mass to fall lower as it rolls.
    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: Uphill rolling thingy
     Reply #41 - December 14, 2011, 11:57 AM
     Afro You got it!
    Religion is organized superstition
  • Re: Uphill rolling thingy
     Reply #42 - December 14, 2011, 07:00 PM
    Of course I friggin got it. I got it the moment I first saw the video. Grin
    Devious, treacherous, murderous, neanderthal, sub-human of the West. bunny
  • Re: Uphill rolling thingy
     Reply #43 - December 15, 2011, 12:10 PM
     Cheesy Cheesy Cheesy
    Religion is organized superstition
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