To achieve a lower fundamental frequency ($f$) in a simple string fixed at both ends, what must be done according to the formula $f = v / (2L)$?

Answer

Increase the string length ($L$).

Since the fundamental frequency ($f$) is inversely proportional to the string length ($L$), making the vibrating element longer directly results in a lower pitch or frequency, assuming wave speed remains constant.

To achieve a lower fundamental frequency ($f$) in a simple string fixed at both ends, what must be done according to the formula $f = v / (2L)$?
physicsfrequencySoundwaveresonance