Question

Explain how a guitarist can play different notes with a single string by pressing on that string at particular points

Answer 1

A guitar string acts as a stretched string fixed at both ends.the minimum frequency which can be produced by this string is called as fundamental frequency and is give by

fn= n V/2L

n=1, 2, 3,4------

V= velocity of the wave on the string

L= length of string

so the frequencies produced on the string are V/2L, 2V/2L, 3V/2L---

V/2L is the fundamental frequency

Others are called as Harmonics

By pressing the string of the guitar at different points, we excite the different harmonics in it and thus we hear different notes