A telephone cord is 4.00 m long and has a mass of 0.300 kg. A transverse wave pulse is produced by plucking one end of the taut cord. The pulse makes three trips down and back along the cord in 0.700 s. What is the tension in the cord?(adsbygoogle = window.adsbygoogle || []).push({});

ok, this problem seems very easy and straightforward but i am getting it wrong..i have absolute no idea why ..i hate physics cant wait till i finish this damn course...

anyways....

t=time

T=tension

u=mass/length

L=total length

t=L*sqrt(u/T)

simple, and just solve for T right??? But i am getting it wrong why??

t=.7 sec

u=(.300 kg/4 m)

L= 3*(4 m)

i have all the variables but T and solve for T and get 22.03 N

but the answer is wrong does any 1 know where i went wrong thx

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# Homework Help: Transverse waves with tension

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