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Old Mar 21st 2010, 04:16 PM   #1
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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?
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Old Mar 23rd 2010, 10:35 PM   #2
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Originally Posted by apple123 View Post
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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