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Determine the components i and j for each vector below. Determine the resultant of the vectors in the i and j.

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Are the components for F3 correct?
Meaning are those given to you?

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Other answers:

yes,it is.
Ok, well how i was taught to do vectors was to use right triangle trig. Do you have a background in using i and j form? (which are also known as unit vectors)
not at all.just i know that i for x axis and j for y axis.
and that is all you need to know. are you familiar with the cartesian coordinate system? and how you write a point (x,y)?
it is like this? Ri=58 cos 30 degree+50 cos 135 degree+45 sod 112.3 degree + 40 cos 112.7 degree? it's for the i component..
are you looking for the i and j of the entire system? or each vector on its own? because that equation you just posted would be for the entire system, and it still would not be correct
no,each vector.
since you are confused, the easiest vector to solve is for F4. F4 is moving in the positive x direction with a force of 40kN, think about this not so much as a force, but just as a point. And there is no pull in the y direction. so the force will will have a vector notation of 40i+0j
next lets take on F1. |dw:1365392293558:dw| remember SOH-CAH-TOA sin(30)=y/58 sin(30)*58=y 29=y cos(30)=x/58 cos(30)*58=x x=50.23 so the vector notation for F2= 50.23i + 29j
does that make sense? I am sorry, my drawing got cut off. |dw:1365392671955:dw|
Ok,i get it.but is there a mistake?this is for f1 right?
vector notation for f1?right?
this is for F1, i dont believe there is a mistake, but i am human haha, what is the mistake that you are noticing?
it is f2.
I solved for the vector in the first quadrant with the f value of 58kN. I'm not sure if you labeled them wrong or something, but that is the vector is solved for
but it's ok,dave.thanks.
do you understand what I did? Like am i actually helping you? or confusing you more and should just quit trying to help? haha
yes,i had already understand it.don't feel like that,Dave.thanks again. :)
ok no problem! i just dont want to confuse you more! do you need more help? Just remember that when a vector is facing a negative direction, that part of the form will be negative i.e. F2, the form will take -i+j

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