Fundamental frequencies of the retuned string


Two identical violin strings, when in tune and stretched with the same tension, have a fundamental frequency of 440.0 Hz. One of the strings is retuned by adjusting its tension. When this is done, 1.5 beats per second are heard when both strings are plucked simultaneously.

a) What are the possible fundamental frequencies of the retuned string?

b) By what fractional amount was the string tension changed if it was i) increased; ii) decreased?

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Physics: Fundamental frequencies of the retuned string
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