Hi so here is a question we have and here is the answer for it, i understand everything up until the circled part i am really stuck there so if you could just use alot of words when you explain it because our professor just puts the equation in without explaining it so please explain it as much as you can because i really dont understand it i would really appreciate it. Thank you (B Page view | A Read aloud|O Add textDrawthe projection of ř along this segiment,Knaon1, aftDimersionsFoAshoanAprach: We're clealing with 3-dimegioneos,tion + force vectors Oefine theJectors as Crtesien vecters + sowe withdat product.IftTo fnd the augle e between lines Ao e BA and BC,define vectus along these lines.The dot preduct between these vectors ould be defined asan fac coseRecorangingO= Crccos(-Ə)O) + (-)(-3) += secos (0.7379):142.5"7There cre several apprenches we conks use to find FaA,but lets stick th dot product for the excupleFOANeed F and û BA inCartesion vector format.F- (801b) - (s0a5) (-3k) - - 75.895 + 25 30R Example 6The pipe shown is subjected to the force of F = 80 lb. Determine theangle 0 between F and the pipe segment BA and the projection of Falong this segment.it2 fty2 ft1 ftF = 80 lbВ31

Given :To find projection of force vector

Answered: are cre several cperoaches we cond use…

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter4: Forces In One Dimension

Section: Chapter Questions

Problem 45A

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Hi so here is a question we have and here is the answer for it, i understand everything up until the circled part i am really stuck there so if you could just use alot of words when you explain it because our professor just puts the equation in without explaining it so please explain it as much as you can because i really dont understand it i would really appreciate it.

Thank you

(B Page view | A Read aloud|
O Add text
Draw
the projection of ř along this segiment,
Knaon
1, aft
Dimersions
FoA
shoan
Aprach: We're clealing with 3-dimegion
eos,tion + force vectors Oefine the
Jectors as Crtesien vecters + sowe with
dat product.
Ift
To fnd the augle e between lines Ao e BA and BC,
define vectus along these lines.
The dot preduct between these vectors ould be defined as
an fac cose
Recoranging
O= Crccos
(-Ə)O) + (-)(-3) +
= secos (0.7379)
:142.5"7
There cre several apprenches we conks use to find FaA,
but lets stick th dot product for the excuple
FOA
Need F and û BA in
Cartesion vector format.
F- (801b) - (s0a5) (-3k) - - 75.895 + 25 30R

Example 6
The pipe shown is subjected to the force of F = 80 lb. Determine the
angle 0 between F and the pipe segment BA and the projection of F
along this segment.
it
2 ft
y
2 ft
1 ft
F = 80 lb
В
31

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