Uni Stuff > Physics
angular momentum
TrueTears:
--- Quote from: /0 on December 24, 2009, 10:55:22 pm ---
--- Quote from: TrueTears on December 24, 2009, 10:46:34 pm ---maths >>>>>> all science
--- End quote ---
lies
>:(
--- End quote ---
lol I was kidding :P but a bit of bias there I do admit haha
/0:
--- Quote from: TrueTears on December 24, 2009, 10:55:50 pm ---
--- Quote from: /0 on December 24, 2009, 10:55:22 pm ---
--- Quote from: TrueTears on December 24, 2009, 10:46:34 pm ---maths >>>>>> all science
--- End quote ---
lies
>:(
--- End quote ---
lol I was kidding :P but a bit of bias there I do admit haha
--- End quote ---
lol i have bias too :D
QuantumJG:
--- Quote from: kamil9876 on December 24, 2009, 10:43:00 pm ---I would rule out linear momentum having anything to do with this, simply because you can change to a reference frame where it would be stationary; but both reference frames must agree on whether it falls down or not. To check whether a certain phenomena depends on some variable, it is good to see if it also works in other reference frames.
I remember some demos long way back where the lecturer chucked a rotating wheel in a suitcase, and suddenly it became uber hard to move it sideways, so angular momentum does ring a bell(also, all inertial reference frames agree on angular momentum so it seems like a better candidate)... but meh i won't have to do any more physics after sem1 next year 8-)
--- End quote ---
That sounds like the right answer. I can't believe I forgot first year physics demo (I even had to do an assignment related to this - :S).
But yeah what happens is you give a tyre angular momentum and it requires a lot of work to change the angular momentum vectors' direction, thus the tyre doesn't tip over but process about it's axes, but the main reason is angular momentum.
appianway:
This is slightly off the bicycle topic, but does anyone here know about precession? It's quite cool. :)
QuantumJG:
In first year physics we were shown the bicycle wheel demo and the professor tried to qualitatively explain precession.
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