where E is the elastic modulus of the cord, the moment per 

 vinit length of cord necessary to maintain the cord in 

 equilibrium in the displaced position^, is 



But 



C 



hence 



^ =TTyc: 



^^ = ^^o * T^ ^ 



o 



L ;. the total moment per unit length due to bending, is then 

 simply the summation of the mcanents due to all such elementary 

 cords, and is given by 



L„ = ECl ■^ j rjPrr- dA 



.3 .,. J 



B o ' j J^^yCo 



since yC « 1 for most practical problems, we may write 



Lg = lEC^ ^ , [2] 



where I is simply the second moment of the cross-sectional 

 area of the fairing, referenced to the axis normal to line 

 a-b which intersects the center of the cable. 



IV. 5 



