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Default Physics Question - 05-04-2013, 08:08 AM

My teacher said if we could solve this we could get a free 100 on a test grade.

All i know is that you have to prove that q will oscillate forever

2 positive charges Q+ (that are not moving) are located on the x-axis on a distance d from an origin o, a third positive charge q with mass m is placed on the x-axis on a distance x (x much smaller than d)



Prove that the charge q will follow a simple harmonic oscillation (by very good approximation)


  
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Default 05-04-2013, 08:10 AM

Well, I'm no physics geek but common sense tells me that since they're both positive charges, they'll want to continually repel each oher. >.>
Can't really prove it, though.
  
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Default 05-04-2013, 08:10 AM

this is what im learning atm, let me check my notes. (all in French though)




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Default 05-04-2013, 08:12 AM

Quote:
Originally Posted by Limoz View Post
this is what im learning atm, let me check my notes. (all in French though)
Translate to English r u ok


  
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Default 05-04-2013, 08:14 AM

If Q1 is stronger than Q2 it will go towards Q2 if you know what i'm saying, I don't really get your question though. Didn't he say how strong they were and shit?


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Default 05-04-2013, 08:15 AM

Quote:
Originally Posted by Arcanex View Post
If Q1 is stronger than Q2 it will go towards Q2 if you know what i'm saying, I don't really get your question though. Didn't he say how strong they were and shit?
No, that's why he made it a Test grade if you got it.


  
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Default 05-04-2013, 08:17 AM

I think the answer is -9>0
That's why is must be a trick question.
  
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Default 05-04-2013, 08:17 AM

Fel=Kq1q2\r^2 find the charges for each thing. Turns into Kq^2\r^2.
Something like that I believe. Then you also use the equation with distance in it, which I forget.




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Default 05-04-2013, 08:22 AM

Quote:
Originally Posted by Limoz View Post
Fel=Kq1q2\r^2 find the charges for each thing. Turns into Kq^2\r^2.
Something like that I believe. Then you also use the equation with distance in it, which I forget.
r=radius which is the distance in this case


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Last edited by Blue Orange; 05-04-2013 at 08:25 AM.
  
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Default 05-04-2013, 08:29 AM

Can someone give me da work nd answer pls


  
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