Question

vibrating the strings in guitar​

Answer 1

Answer:

Produces melodious sound which is pleasant to ears.

Answer 2

Answer:

The guitar string forces the sound box to begin vibrating at the same frequency as the string. The sound box in turn forces surrounding air molecules into vibrational motion. Because of the large surface area of the sound box, more air molecules are set into vibrational motion. This produces a more audible sound.