PHYS 101 Lecture Notes - Logarithmic Scale, Fundamental Frequency, Longitudinal Wave

A particular guitar string is supposed to vibrate at 220 Hz, but it is measured to vibrate at 225 Hz. By what percent should the tension in the string be changed to correct the frequency?

A particular guitar string is supposed to vibrate at 190 Hz, but it is measured to actually vibrate at 208 Hz. By what percent should the tension in the string be changed to get the frequency to the correct value? (Your answer should be positive for an increase and negative for a decrease in the tension.)

A guitar string is supposed to be tuned to 440Hz fundamental frequency but is only at 436Hz. What percent change in the tension of the string must be applied to get the correct fundamental frequency?