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  1. #1
    Grand Master Know It All Duman's Avatar
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    Default Strange Rotational Behavior

    I've seen a lot of things, but this one took my by surprise when I came across it on Youtube.

    A rotating object flipping direction, appearing to violate conservation of momentum. Never saw this in school.


  2. #2
    Possesses Antidote for "Cool" Gman's Avatar
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    Irving posted this up a while back. I think it might be in the cool video thread.

    ETA: It was brutal that posted this up in the video thread: https://www.ar-15.co/threads/146129-...=1#post2244529

    Irving also posted it in the Post Whore Thread.
    Last edited by Gman; 01-26-2020 at 19:15.
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  3. #3
    Mr Yamaha brutal's Avatar
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    Quote Originally Posted by Gman View Post
    Irving posted this up a while back. I think it might be in the cool video thread.

    ETA: It was brutal that posted this up in the video thread: https://www.ar-15.co/threads/146129-...=1#post2244529

    Irving also posted it in the Post Whore Thread.
    My posts usually follow Irvings posts after I've gone down a rabbit hole watching his.

    Last few days it's been Project Farm. Check him out. I'm making a dang list from his tests.
    My Feedback
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  4. #4
    QUITTER Irving's Avatar
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    Default

    Veritasium has a bunch of cool videos. As well as Smarter Everyday, Steven Mould, Vsauce, Practical Engineering, etc.

  5. #5
    Grand Master Know It All Duman's Avatar
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    Default

    My apologies, I didn't realize it was posted previously.

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    QUITTER Irving's Avatar
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    Quote Originally Posted by Duman View Post
    My apologies, I didn't realize it was posted previously.
    No need to apologize for spreading cool stuff bub.

  7. #7
    Splays for the Bidet CS1983's Avatar
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    Default

    Quote Originally Posted by Irving View Post
    No need to apologize for spreading cool stuff bub.
    Repetitio est mater studiorum
    Feedback

    It is terrible to contemplate how few politicians are hanged. - The Cleveland Press, March 1, 1921, GK Chesterton

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    Possesses Antidote for "Cool" Gman's Avatar
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    Quote Originally Posted by Irving View Post
    No need to apologize for spreading cool stuff bub.
    Yep. Just providing some context.
    Liberals never met a slippery slope they didn't grease.
    -Me

    I wish technology solved people issues. It seems to just reveal them.
    -Also Me


  9. #9
    Zombie Slayer MrPrena's Avatar
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    Default

    Didnt watch entire video, it is 3d, and it has X-axis Y-axis and Z-axis at Cartesian coordinates.
    If ZERO force applied to 1 axis, it will just spin 1 way.

    Credit :Thanks my High school Physics teacher from 90s.



    Now, if you want to talk detail mechanical/classical movement in Jupiter with much higher atmospheric pressure + You drop it from 1000 ft from top, and you try to hit a spinning racquet with tennis ball in the middle of spin, it requires 20%er.

  10. #10
    Grand Master Know It All Duman's Avatar
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    Quote Originally Posted by MrPrena View Post
    Didnt watch entire video, it is 3d, and it has X-axis Y-axis and Z-axis at Cartesian coordinates.
    If ZERO force applied to 1 axis, it will just spin 1 way.

    Credit :Thanks my High school Physics teacher from 90s.

    Now, if you want to talk detail mechanical/classical movement in Jupiter with much higher atmospheric pressure + You drop it from 1000 ft from top, and you try to hit a spinning racquet with tennis ball in the middle of spin, it requires 20%er.
    That's ok if the moment of inertia is identical in all 3-axes. The asymmetry of MOIs gives rise to the flipping of the spin vector.

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