Wavelength of the wave which is produced at the wire

  • #1
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Homework Statement



The diagram attached shows a metal wire stretched between two supports P and T which are 4x apart where PQ=QR=RS=ST=x . Three small pieces of paper are placed at positions Q , R and S . When the wire is vibrated at a certain frequency , the small piece of paper at R remains on the wire but the small pieces of paper at Q and S drop off . What is the wavelength of the wave which is produced at the wire .

Homework Equations





The Attempt at a Solution



what can i infer if that paper doesn't drop , does it have anything to do with the nodes and antinodes of the standing wave ?
 

Answers and Replies

  • #2
rl.bhat
Homework Helper
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P, R and T are nodes. Q and S are antipodes.
Length between the two successive nodes or antinodes is equal to λ/2.
 
  • #3
438
0


P, R and T are nodes. Q and S are antipodes.
Length between the two successive nodes or antinodes is equal to λ/2.

thanks !
 

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