Physics Homework Question?

Question

A piano tuner hears one beat every 2.8 s when trying to adjust two strings, one of which is sounding 350 Hz.

How far off in frequency is the other string?

Answer 1

The beat period is .

Frequency of one of the string is .

Find the beat frequency is , where is the beat period.

By the definition of beat frequency, it is the difference in the two frequencies.

or

or

The other frequency is either or