Physics

Problem

A piano tuner hears

6

beats per second when a string is sounded together with a

256\,\text{Hz}

tuning fork. After the tuner loosens the string slightly, the beat frequency increases to

9

beats per second. What was the original frequency of the piano string? a)

262\,\text{Hz}

250\,\text{Hz}

256\,\text{Hz}

247\,\text{Hz}