Quick conceptual help!

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  • #1
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Ok, I don't understand why in a sound resonating pipe, that the in the closed end there needs to be a node and not antinode. Why?
 

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  • #2
Hurkyl
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IIRC, you want to look at the reflected wave.
 
  • #3
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huh? Can you elaborate?
 
  • #4
Hurkyl
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Sorry, my mistake, I was thinking of a transverse wave, not a longitudinal wave.


Recall that nodes are where the particles do not oscilate about their rest position... does that help?
 
  • #5
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Right. I get that. But what would it make a difference if i had a anti-node instead on a closed pipe?
 
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Hurkyl
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Well, it's kind of difficult for air particles to oscillate through the pipe...
 
  • #7
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wait. Ok imagine the pipe, it has a plunger and an open side on the opposite end. Why would air particles have trouble? It is coming from the open side or the anti-node side.
 
  • #8
Hurkyl
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When I said through, I meant through the closed end.
 

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