The Frequency of Vibrations of a Piano String Varies Directly

question 45

Multiple Choice

The frequency of vibrations of a piano string varies directly as the square root of the tension on the string and inversely as the length of the string.The middle A string has a frequency of 430 vibrations per second.Find the frequency of a string that has 1.25 times as much tension and is 1.4 times as long. ​

• A)373.4 vibrations / sec
• B)343.4 vibrations / sec
• C)353.4 vibrations / sec
• D)383.4 vibrations / sec
• E)363.4 vibrations / sec

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