Question

Power lines question. Please explain how to do. Picture and question attached.

Answer 1

do you recall your hyperbolic trig identities?

Answer 2

No, I don't remember. Could you explain?

Answer 3

@terenzreignz let's help this guy out and finish up my problem i keep getting the wrong answer

Answer 4

You need to use the length of a curve integral.
Are you familiar with that?

Answer 5

Is it this one, if so what function would I use for my value for f(x)?

Answer 6

That's the summation but the integral is similar

Use f(x) = k[cosh(x/k) - 1] where k = T/ug
So firstly work out f'(x)

Answer 7

how did you go?