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GELOMBANG• Gelombang stasioner
Dari persamaan simpamgan dan bentuk bakunya
y = 0,1 cos 5πx sin 2πt
y = 2A cos kx sin ωt
diperoleh
k = 5π /m
panjang gelombang
k = 5π
2π / λ = 5π
λ = 2/5 = 0,4 m
jarak perut dan simpul terdekat
x = ¼ λ
x = ¼ • (0,4 m)
x = 0,1 m = 10 cm ← jwb