Physics Help Forum Wave travelling along string - what is the amplitude?

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 Mar 21st 2010, 05:16 PM #1 Junior Member   Join Date: Mar 2010 Posts: 2 Wave travelling along string - what is the amplitude? A wave travels along a string. If the tension in the string is doubled, how would the amplitude of the wave change? Just wondering if it's correct to use the equation I would say that the energy does not change, but omega does. So I'd find how omega changes and set the energies equal, then solve for A. Would that work?
Mar 23rd 2010, 11:35 PM   #2
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 Originally Posted by apple123 A wave travels along a string. If the tension in the string is doubled, how would the amplitude of the wave change? Just wondering if it's correct to use the equation I would say that the energy does not change, but omega does. So I'd find how omega changes and set the energies equal, then solve for A. Would that work?
When the tension increases, frequency increases. So the amplitude decreases because the energy remains constant.

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