Primarygun Posted April 3, 2005 Share Posted April 3, 2005 In the figure, describe the motion of particles X and Y at the instant. What will be the shape of the string after 1/4 cycle? I don't know which direction that the crests are travelling as there are two sources. Link to comment Share on other sites More sharing options...
swansont Posted April 3, 2005 Share Posted April 3, 2005 The wall with point P is fixed, so it should end up as a standing wave. Link to comment Share on other sites More sharing options...
Primarygun Posted April 4, 2005 Author Share Posted April 4, 2005 I haven't learnt standing wave yet. Can you tell me what it is? a straight line resulted? Link to comment Share on other sites More sharing options...
swansont Posted April 4, 2005 Share Posted April 4, 2005 A standing wave has fixed nodes, and only certain wavelengths are allowed - a half-integral number of wavelengths have to fit. That's because all other wavelength waves will destructively interfere. Link to comment Share on other sites More sharing options...
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