Potential energy of a vibrating string?

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SUMMARY

The calculation of potential energy in a vibrating string can be derived from the work done by the string during its deformation. To find this, one must first calculate the maximum kinetic energy at a given amplitude of vibration and equate it to the potential energy at maximum displacement. Specifically, the transverse velocity of the string at zero displacement must be determined, followed by integrating (1/2)(M/L)v^2 over the entire length of the string to obtain the total kinetic energy. This approach relies on the principle of conservation of energy.

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torehan
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How can I calculate potential enegry?

I have a interpretation about it, we should use the work that the string does. But there is deformation on dicplacement of the string.

waiting for the any ideas.
 
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I would try calculating the maximum kinetic energy for a given amplitude of string vibration, then equate that with the potential energy when the string is at it's maximum amplitude of vibration.

I.e., for a given amplitude, what is the velocity of the string at zero displacement? Then integrate (1/2)(M/L)v^2 over the entire length to get total kinetic energy. Note, "v" is the transverse velocity, not the wave velocity.

By conservation of energy, this result equals the potential energy when the string is at it's maximum displacement.
 

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