A piano tuner plays an out of tune A note on his piano and then strikes his 440 Hz tuning fork. He notices a beat of 2 Hz. When he slightly loosens the piano string and plays the note and the fork again the beat goes to 7 Hz. What was the frequency of the string vibration after he loosened it? (a standard A note is 440 Hz)
A piano tuner plays an out of tune A note on his piano and then strikes his 440 Hz tuning fork. He notices a beat of 2 Hz. When he slightly loosens the piano string and plays the note and the fork again the beat goes to 7 Hz. What was the frequency of the string vibration after he loosened it? (a standard A note is 440 Hz)
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QUESTION 24
A piano tuner plays an out of tune A note on his piano and then strikes his 440 Hz tuning fork. He notices a beat of
2 Hz. When he slightly loosens the piano string and plays the note and the fork again the beat goes to 7 Hz. What was the
frequency of the string vibration after he loosened it? (a standard A note is 440 Hz)
QUESTION 25
From the diagram which shows pressure / time dependence find the beat frequency. Time is in seconds
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