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The given system of knotted cords (label the left knot as J and the right knot as K) supports the indicated weights. a) What is the tension TA in cord A? b) What is the tension TB in cord B? c) What is the tension TC in cord C? V65° A 125° 1000 dyn B 500 dun

The given system of knotted cords (label the left knot as J and the right knot as K) supports the indicated weights. a) What is the tension TA in cord A? b) What is the tension TB in cord B? c) What is the tension TC in cord C? V65° A 125° 1000 dyn B 500 dun

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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1st pic is the problem

2nd pic is the solution

question to answer:

why was cos80 disregarded?

can you explain the encircled part of the solution ( i was confused and need to understand how it happened)

IF, Tacos 35° = Tb cos 80⁰ + 30 Then, Fx=0-Tasin 35° + Tbsin 80° = 0 0 Tbsin80= Tasin3J' o Tbongo Tb = Tasin 35' D sin 80 then, acos3s = Tbcos 200 1300 Tacos 35-Tasin 35 sin 80⁰ 1300 IF, To cos 35 Tb cos 80⁰ +30µ Then, & Fx = 0 - Tasin 36⁰° + Tbsin 80⁰ = 0 brin 80⁰ = Tasin 30 Tb then, Tacos 3 = T20 1300 Tacos 35-Tasin 35 sin 80⁰ Tbsingo = Tasin 35° sin 80 7300
Transcribed Image Text:IF, Tacos 35° = Tb cos 80⁰ + 30 Then, Fx=0-Tasin 35° + Tbsin 80° = 0 0 Tbsin80= Tasin3J' o Tbongo Tb = Tasin 35' D sin 80 then, acos3s = Tbcos 200 1300 Tacos 35-Tasin 35 sin 80⁰ 1300 IF, To cos 35 Tb cos 80⁰ +30µ Then, & Fx = 0 - Tasin 36⁰° + Tbsin 80⁰ = 0 brin 80⁰ = Tasin 30 Tb then, Tacos 3 = T20 1300 Tacos 35-Tasin 35 sin 80⁰ Tbsingo = Tasin 35° sin 80 7300
The given system of knotted cords (label the left knot as J and the right knot as K) supports the indicated weights. a) What is the tension TA in cord A? b) What is the tension TB in cord B? c) What is the tension TC in cord C? P65° A C 125° 1000 dyn 500 dyn ✩
Transcribed Image Text:The given system of knotted cords (label the left knot as J and the right knot as K) supports the indicated weights. a) What is the tension TA in cord A? b) What is the tension TB in cord B? c) What is the tension TC in cord C? P65° A C 125° 1000 dyn 500 dyn ✩
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