Forty-one forks are arranged in increasing frequency, each giving 5 beats per second with the next. The last is the octave of the first. Find the first frequency. (answer in $Hz$ ).
Answer:
200
Solution:
40 steps of 5 Hz: $f_{l a s t} = f_{1} + 200 = 2 f_{1}$ , so $f_{1} = 200$ Hz.

Question

Forty-one forks are arranged in increasing frequency, each giving 5 beats per second with the next. The last is the octave of the first. Find the first frequency. (answer in Hz ).

TestHub · Accepted Answer

40 steps of 5 Hz: f l a s t ​ = f 1 ​ + 200 = 2 f 1 ​ , so f 1 ​ = 200 Hz.

Physics - Sound Wave Question with Solution | TestHub

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