AndreAo
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Homework Statement
A transverse sinusoidal wave is generated at one end of a long, horizontal string by a bar that moves up and down through a distance of 1.00cm. The motion is continuous and is repeated regularly 120 times per second. The string has linear density 120 g/m and is kept under a tension of 90.0N. Find (a) the maximum value of the transverse speed u and (b) the maximum value of the transverse component of the tension.
Homework Equations
y(x,t)=A sin(kx-wt) traveling wave
k = \frac{2\pi}{\lambda} angular wave number
w = 2\pif angular frequency
v = \sqrt{\frac{T}{\mu}} wave speed
\mu linear density
The Attempt at a Solution
After calculating the values of k and w, and deriving the first equation, I found u = 3.77 m/s the answer in the book say it is 3.66 m/s is anything wrong?
Letter b I have no idea on how to start solving. I tried to calculate it using F = ma, but I don't know how much mass I should consider, and probably this way is not right.