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Verified answer
Diket :Dawai
Panjang, L = 20 cm = 0,2 m
Massa, m = 1 gram = 0,001 kg
Massa beban, m = 1 kg
Berat beban, F = w = m.g = 1•10 = 10 N
Tanya :
Frekuensi nada atas ke-1, f1 = __?
Jawab :
Step 1
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Cari dulu cepat rambat, V = __?
V = √(F.L/m)
V = √(10•0,2/0,001)
V = √2000
V = 20√5 m/s
Step 2
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Nada dasar,
fo = V/(2.L)
fo = 20√5 / (2•0,2)
fo = 50√5 Hz
Step 3
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Perbandingan frekuensi pada dawai
fo : f1 = 1 : 2
Maka :
f1 = (2/1).fo
f1 = (2/1)•50√5 Hz
f1 = 100.√5 Hz
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FZA