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A dulcimer string is supposed to vibrate at 240 Hz. Instead it is vibrating at 265 Hz. NOTES MAGUS DISCUSS UNITS STATS MELP P
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Answer #1

Since Frequency is given by

f=(T/\mu)1/2/2L

Where L is length of string

T is tension in string

and \mu mass per unit length of string

So

Part A.

Tension is proportional to square of frequency

So % change in tension is=(2652-2402)100/(2402)=21.92%

Part B.

Wavength=speed/frequency=343/240=1.43 m

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