The fundamental frequency is determined by the length, tension, and mass of the string. The unit of frequency is hertz (Hz). There are three factors that influence the frequency with which a guitar string vibrates: length, vibration, and frequency of vibration.Nov 21, 2022

Why does tightening a string increase frequency?

Tightening the strings on a guitar increases the tensile force on the string. This force limits the amount of movement the string can make when you pluck it, and as such, the distance it vibrates decreases (which translates into a higher frequency of vibration).Apr 26, 2018

As the mass of a vibrating body increases, its frequency decreases, but as the tension increases the frequency also increases.