thick string
When the hammer inside a piano hits the string, it creates a sound. The pitch of the sound depends on how thick or long the string is. The thicker the string, the lower the sound.
Vibrations
use kite string or anything string that is thick or you can use sewing thread then triple it and make it thicker
to make the string make a low pitch sound
Thicker strings vibrate slower than the thinner strings. of course it changes when you press down on fret.
From the string
Different string instruments have different ways to make sound. Pianos hit the strings with a felt covered "Hammer", a Guitar creates a sound when the guitar player plucks a string. Either way, each string instrument makes sound by the vibration of the string.
string because it uses string to make the piano make sound
Low
it can't make the craters depper and it flat it around
String instruments make sound because you put rosin on the bow.
The guitar makes sound when you pluck a string. The string vibrates down to the base of the guitar and travels in the hole, coming out as a sound we call a note.