Sebuah gitar bergetar 15 kali dalam 1 sekon. berapakah frekuensi dan periode benda tersebut….

Sebuah gitar bergetar 15 kali dalam 1 sekon. berapakah frekuensi dan periode benda tersebut….

a. frekuensi 15 hz dan periode 0,06 s
b. frekuensi 20 hz dan periode 0,06 s
c. frekuensi 15 hz dan periode 0,6 s
d. frekuensi 20 hz dan periode 0,6 s

Jawaban yang benar adalah a. frekuensi 15 hz dan periode 0,06 s

Gelombang transversal adalah gelombang yang memiliki arah getaran merambat tegak lurus dengan arah getarnya.
Rumus Periode dan frekuensi dapat dituliskan:
T = t/n
F = n/t atau F =1/T
DImana:
T = Periode (s)
F = Frekuensi (Hz)
n = Jumlah getaran
t = waktu (s)

Diketahui:
n = 15 kali
t = 1 s
Ditanya:
F =…..?
T =…..?
Pembahasan:
T = t/n
T = 1/15
T = 0,06 s

F =1/T
F =1/(1/15)
F =15 Hz

Jawaban yang benar adalah a. frekuensi 15 hz dan periode 0,06 s

 

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