- #1
beccaka2003
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Homework Statement
The equation describing a transverse wave on a string is
y(x,t) = (3.50mm)sin[(t/162s) - (x/42.5)]
Find the transverse displacement of a point on the string when t = 0.220 s and at a position x = 0.140m
Homework Equations
y(x,t) = Asin(wt-kx) or y(x,t) = Asin2pi[(t/T)-(x/wavelength)]
k = 2pi/wavelength
w = 2pif
The Attempt at a Solution
I know from previous parts of the problem that I got right:
wavelength = 0.148m
f = 1/T = 25.8 Hz
A = 3.5mm
I thought that you would just plug the values of t and x into the second equation I gave, but it was wrong. I keep on coming up with y = 1.73, no matter what I do, but the answer is y = -3,46. What am I doing wrong?