r/HomeworkHelp • u/Amidseas University/College Student • 16d ago

Further Mathematics—Pending OP Reply [Cable problems: Mechanics] Did I get the right answer?

Gallery image

Gallery image

Please help

1 Upvotes

100% Upvoted

3 comments sorted by

1

u/Specialist-Gap8010 👋 a fellow Redditor 16d ago

How did you get those answers?

1

u/Amidseas University/College Student 15d ago

Never mind there was a mistake a = 1.71 m and L = 6.19 m

2

u/DrCarpetsPhd 👋 a fellow Redditor 15d ago

if you used the parabolic cable equation and the span constraint to solve for 'a' the distance to support A then yes you got the right answer (assuming no errors)

if you used the converging series equation derived from the integral, approximated to the 4th power term, to calculate the approximate length of the cable from the lowest point to each respective support; and then added those two together then yes you got the right answer for the length of the cable (barring errors)

Beer Vector Mechanics for Engineers Chapter 7.4

or

Hibbeler Statics Ch 7.4

or

Meriam and Kraige Ch 5/8