Two strings which are fixed at both ends are identical except that one is 0.65 cm longer than the other. Waves on both of these string propagate with a speed of 34.9 m/sec and the fundamental frequency of the shorter string is 220 Hz.(adsbygoogle = window.adsbygoogle || []).push({});

a) What is frequency of the beat that would result if these two strings were plucked at the same time?

For this, I did 34.9 / 220 to get the length of the string, which was 0.158636m. Then I added 0.065m to it to get 0.2236m. Then I did, 34.9 / 0.2236 to get the new frequency which is 156.0569 Hz, but thats not right. It makes sense since the new frequency should be greater. What am I doing wrong?

c) What is the beat frequency if the length difference is now 0.8 cm?

For this one, I would pretty much follow the same steps for part a, but use 0.08m and then subtract 220 from this new frequency.

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# Beats from Different Strings

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