/sci/ - Science & Math

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Anonymous Tue Jan 11 01:09:52 2011 No.2329600 [Reply] [Original]

I have a question. Back a few years in high school, my physics teacher said that for circular dynamics, the momentum was opposite the centripetal acceleration, and that's why water doesn't fall out of a bucket when you swing it over your head. Maybe he didn't actually say it, and I just misunderstood him. Anyways, I was under that impression in highschool.

But if momentum is m*v, and v is tangential to the acceleration, momentum should be tangential to the acceleration as well, right?

Can you help clarify? Thanks

sage sage Tue Jan 11 01:16:52 2011 No.2329632
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>>2329600
>momentum is m*v

Nope.
Just cause you learn a simple defintion of linear mometum for very simple systems, doesn't mean it applies to all physics dumbass.

Angular momentum has a differnt formula.
http://en.wikipedia.org/wiki/Angular_momentum

>>	Anonymous Tue Jan 11 01:40:52 2011 No.2329708 No, centripetal force is not opposite to momentum, but tangent, like you said.

>>	Anonymous Tue Jan 11 01:42:52 2011 No.2329719 >>2329632 haha alright. I brought my high school understanding up the other day as an explanation in circular dynamics, and someone said I was wrong and brought up the m*v argument. Gracias senor amable

>>	Anonymous Tue Jan 11 01:43:52 2011 No.2329724 >>2329632 >implying momentum alone doesn't refer to linear momentum >implying angular momentum is parallel to to centripetal acceleration It's back to grade school for you, retard.

>>	Anonymous Tue Jan 11 01:44:52 2011 No.2329732 >>2329708 However, the important thing is is that the centripetal force points in the opposite direction to the bottom of the pale. Also, ignore >>2329632 troll

>>	Anonymous Tue Jan 11 01:47:06 2011 No.2329751 >>2329632 Don't be an ass, especially when the difference between angular momentum and linear momentum is just that you use angular velocity and moment of inertia instead of mass and linear velocity. OP was just asking a question.

>>	Anonymous Tue Jan 11 01:47:52 2011 No.2329746 File: 17 KB, 444x299, woman%20laughing.jpg [View same] [iqdb] [saucenao] [google] >>2329724 >thinks "momentum" implies "linear momentum" >Never took hamiltonian dynamics Read a book bro

>>	Anonymous Tue Jan 11 01:49:52 2011 No.2329758 File: 65 KB, 338x338, 1268878726250.jpg [View same] [iqdb] [saucenao] [google] >>2329732 >>2329732 How is >>2329632 a troll? He answers the question, and provides source? WTF?

>>	Anonymous Tue Jan 11 01:55:52 2011 No.2329784 >>2329746 >implying I don't know hamiltonian dynamics >implying it has anything to do with such a simple problem >implying you aren't disregarding the fact that you are still dead wrong on angular momentum

>>	Anonymous Tue Jan 11 01:57:52 2011 No.2329794 File: 35 KB, 462x460, 1281946822820.jpg [View same] [iqdb] [saucenao] [google] >>2329784 WTF? TROLLIN? Read up buddy http://en.wikipedia.org/wiki/Angular_momentum

>>	sage sage Tue Jan 11 01:58:52 2011 No.2329797 File: 3 KB, 126x121, 1274151286674.jpg [View same] [iqdb] [saucenao] [google] >>2329784

>>	Anonymous Tue Jan 11 01:58:52 2011 No.2329800 >>2329794 Look, you fucking retard, angular momentum is NOT parallel or opposite to centripetal acceleration. It's perpendicular to it. Fuck, 10/10. You are so fucking rearded just the fact you live and breathe is pissing me off.

Anonymous Tue Jan 11 02:08:52 2011 No.2329840
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>>2329800

>Implying I ever said angular momentum is parallel or opposite to centripetal acceleration

ReRead the posts faggot. I never said that shit. All I did was correct OP on his defintion of angular momentum.

YOU FAIL AT BASIC READING COMPREHENSION

Anonymous Tue Jan 11 02:17:52 2011 No.2329877

>>2329840
Then your fucking post has nothing to do with the matter at hand. You are even more fucking retarded than I tought you were, and that's saying something. You just wanted to show of your knowledge, or actually lack thereof, to feel good about yourself.

People like you make me sick, I really hope you die a fucking painful death after your entire family has been butchered right in front of you.

>>	Anonymous Tue Jan 11 02:19:52 2011 No.2329887 File: 56 KB, 707x403, 1291072574187.png [View same] [iqdb] [saucenao] [google] >>2329877 Looks like someone has his panties in a bunch. You should take a nap little guy.

>>	Anonymous Tue Jan 11 02:19:52 2011 No.2329896 File: 8 KB, 125x125, 1270771932562.jpg [View same] [iqdb] [saucenao] [google] >>2329877 Having a bad day huh? Trouble at home?

>>	Anonymous Tue Jan 11 02:31:52 2011 No.2329934 >>2329794 Obvious troll is obvious. He wasn't talking about angular momentum. He was talking about linear momentum.

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