#81 Fido 5:46 PM KBack WeBWorK: NYCpark : Sound MATHEMATICAL ASSOCIATION OF AMER
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#81 Fido 5:46 PM KBack WeBWorK: NYCpark : Sound MATHEMATICAL ASSOCIATION OF AMERICA Logged in as 1638084 . Log Out G webwork / nycpark / sound/5 Sound: Problem 5 Previous Problem Problem List Next Problem (1 point) A piano tuner uses a tuning fork to tune a string to 360Hz. When the tension is 580N , he hears a beat frequency of 0.3Hz . The beat frequency decreases if the tension is increased. What is the correct tension? Preview My Answers Submit Answers You have attempted this problem 0 times. You have unlimited attempts remaining.Explanation / Answer
change in frequency , f = 360.0 - 0.3 = 359.7 Hz .
Frequency is proportional to the square root of tension. Thus tension must increase by a factor of (360/359.7)2
Tension , T = 580 (360/359.7)2 = 580.96 N
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