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Homework Statement
A circus performer stretches a tightrope between two towers. He strikes one end of the rope and sends a wave along it toward the other tower. He notes that it takes the wave 0.880 s to reach the opposite tower, 20.0 m away. If a 1 meter length of the rope has a mass of 0.255 kg, find the tension in the tightrope.
Homework Equations
v-f(lambda)
v=sqrt.(tension/mu)
mu=mass per unit length
tension=mg
f=1/t
The Attempt at a Solution
I solved for wave speed using v=f(lambda)
f=1/T=1/.88s=1.136Hz
Delta(x)=lambda=20m, so 20m x 1.136=22.72m/s
Tension=v^2(mu) = (22.72)^2(.225/20) or (22.72)^2(.225/1) ??
I'm not sure what I'm doing wrong. Suggestions would be appreciated.
thanks
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