Physics

Problem

While tuning a piano string against a

330\,\text{Hz}

tuning fork, a technician notes the following: • Initially,

10

beats per second are heard. • After the string is tightened once, the beat frequency drops to

5

beats per second. • After an identical second tightening, the beats disappear. What was the frequency of the string before any tightening? a)

335\,\text{Hz}

320\,\text{Hz}

340\,\text{Hz}

325\,\text{Hz}