1. A violin string is oscillating at a frequency of 880 Hz (1 Hz = 1 full cycle / second) in its 2nd harmonic. What wold be the frequency of the fundamental vibrational mode?

Question

2. Describe how you would go about finding the frequency of an unmarked tuning fork using the resonance column apparatus and a known tuning fork.

Answer 1

If the fundamental is 440hz, then the second harmonic is at 880hz.

http://www.csun.edu/scied/1-demo/resonance_tube/resonance_tube.htm