In the Group Work, once we have calculated (and experimentally determined) our fundamental frequency for our string, how do we find the higher resonant frequencies, or harmonics?

We merely raise the fundamental frequency by the power of the harmonic number: The second harmonic equals the fundamental squared, and so on.

We merely divide the fundamental frequency by the harmonic number: The second harmonic equals 1/2 times the fundamental, and so on.

We merely multiply the fundamental frequency by the harmonic number: The second harmonic equals 2 times the fundamental, and so on.

We merely multiply the fundamental frequency by the log of the harmonic number: The second harmonic equals the fundamental times log 2, and so on.