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• sumber bunyi
ρb = ¼ ρa
fb / fa = __?
Frekuensi nada dasar senar:
f = (1/2L) √(F/(ρ A )
frekuensi berbanding terbalik dengan akar massa jenis.
fb / fa = √ρa / √ρb
fb = √(ρa / ρb) • fa
fb = √(ρa / ¼ ρa) • fa
fb = 2 fa ← jwb
frekuensi menjadi 2 kali semula