Cable Sag Error (Catenary Curve Effect) Calculator
A displacement cable is best described by a catenary curve when the curve is subjected to a uniform force. The curve effect resembles a flexible chain suspended by its ends with gravity acted upon it. This simple online calculator calculates the cable sag measurement error and the length.
Catenary Curve Effect Calculation
Code to add this calci to your website
q = w * g,
a = n / q,
h = a ( cosh ( l / ( 2* a )) - 1),
s = 2 * a * sinh ( l / ( 2* a ))
q = cable weight per unit length,
w = cable mass per unit length,
g = force perpendicular to cable length,
a = angle between x axis and cable sector,
n = cable tension,
l = straight line distance,
h = cable sag,
s = cable length.
Calculation of catenary curve effect in cable is made easier with this online tool.