Final answer:
To raise the pitch of a guitar string, you can change its mass to a lighter string, increase the tension by tightening the tuning pegs, or shorten the length by pressing down on the frets.
Step-by-step explanation:
To raise the pitch of a guitar string, you should change the following characteristics:
- Mass: To increase the pitch, you can use a lighter string with less mass. This will result in higher frequency vibrations and therefore a higher pitch.
- Tension: Increasing the tension of the string, which can be done by tightening the tuning pegs, will also raise the pitch. Higher tension leads to faster wave propagation and higher frequency vibrations.
- Length: Shortening the length of the string will increase the pitch. This can be achieved by pressing down on the frets, effectively shortening the vibrating length of the string.