- #1
Kandycat
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Homework Statement
A cord of mass .65 kg is stretched between two supports 28 m apart. If the tension in the cord is 150 N, how long will it take a pulse to travel from one support to the other?
Homework Equations
umm... the only equation to find helpful was...
T = 2pi[tex]\sqrt{m/(mg/L)}[/tex] = 2pi[tex]\sqrt{m/(F/L)}[/tex]?
The Attempt at a Solution
Knowns:
F (tension) = 150 N
m = .65 kg
L = 28 m
2pi[tex]\sqrt{.65 kg/(150 N/28 m)}[/tex] = 2.19 s?
Though the book says it is 35 s...
Help? Should there be another equation that I should be using or did I miss something?