I need help to solve only problem 2.40. Thank you 2.40 The pole for an antenna is held by three guy wires as shown. If theresultant force exerted by these wires on the pole at D is to be a downwardforce of 336 lb to avoid bending of the pole at its base 0, determine (a) thetensions FDA, FDB, and Foc in these wires, (b) the angle 0 between wiresFig. P2.39D.24 ftDADBDA and DC.4 A transmission tower OD is guyed with three cables DA, DB, and DCchown. The tower is so designed that the resultant force exerted by thesecables at D is R=-22.9j kN. Determine (a) the tensions F, FDR , andEe to be set in these cables, (b) the angle OAc between cables DA and DC,(c) the angle O3c between cables DB and DC.8 t6 ft12 ft%3D8 ftDA24 ft12 ftasFig. P2.40es84 m42 m48 m63 mA°21 m48 m28 mFig. P2.41

Answered: Image /qna-images/answer/66fafdde-b933-4696-b266-140b511806cf.jpg

Answered: Fig. P2.39 a DA» DB DA and DC.

Engineering

Mechanical Engineering

Fig. P2.39 a DA» DB DA and DC.

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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Concept explainers

Conduction and Convection

When energy travels from one object to another it is said to have undergone heat transfer. Heat transfer is nothing but the transfer of thermal energy or internal energy from one thing to another, like e.g., when a vessel with water, kept on top of a burner, heats up because of the flame underneath it.

Question

I need help to solve only problem 2.40. Thank you

2.40 The pole for an antenna is held by three guy wires as shown. If the
resultant force exerted by these wires on the pole at D is to be a downward
force of 336 lb to avoid bending of the pole at its base 0, determine (a) the
tensions FDA, FDB, and Foc in these wires, (b) the angle 0 between wires
Fig. P2.39
D.
24 ft
DA
DB
DA and DC.
4 A transmission tower OD is guyed with three cables DA, DB, and DC
chown. The tower is so designed that the resultant force exerted by these
cables at D is R=-22.9j kN. Determine (a) the tensions F, FDR , and
Ee to be set in these cables, (b) the angle OAc between cables DA and DC,
(c) the angle O3c between cables DB and DC.
8 t
6 ft
12 ft
%3D
8 ft
DA
24 ft
12 ft
as
Fig. P2.40
es
84 m
42 m
48 m
63 m
A°
21 m
48 m
28 m
Fig. P2.41

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