Answer to Question #159561 in Mechanics | Relativity for Ermus Ken

Question

Suppose a piano tuner hears 3 beats per second when listening to the combined sound from her tuning fork and the piano note being tuned. After slightly tightening the string, she hears 2 beats per second. Should she loosen the string or should she further tighten the string? Why?

Answer 1

Answer

According to concepts of Physics it should be tighten because she able to hear no more beat frequencies. If you hear beat frequencies, then that means the piano is not tunned. To have identical frequencies, beats need to disappear.