Every Day Stress

I thought from the title we were trying to calculate the stress you induce.

It is permanent mechanical force (everyday stress).

sks

You need to check out the mathematics of catenaries, Gran. I'd do it for you but I'm too tired.

"If:

A=Horizontal distance betwen ends (at same height)

B=Depth of catenary

C=radius of curvature at lowest point

L=length along catenary

M=Mass per unit length

Tm=Tension at ends of catenary

To=Tension at lowest point. (Also horizontal component of tension at any point)

Then:

C=To/M, and

B=C(cosh(A/2C)-1)

Read more: http://wiki.answers.com/Q/What_is_the_Formula_for_sag_in_a_catenary#ixzz1yirkY8Ol
The electrical power engineering handbook....