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-   -   finding the resultant and eq. for 3 vector on one point (http://www.physicsforums.com/showthread.php?t=355515)

needhelp1 Nov16-09 11:01 PM

finding the resultant and eq. for 3 vector on one point
 
1. The problem statement, all variables and given/known data
I need help with this hw problem.
1st vector: 80 N & 180 degree
2nd vector: 40 N & 145 degree
3rd vector: 50 N & -50 degree

And I need to find the resultant and the Eq. Where do I start and how do I do it please include answer as I'm confuse and I have a quiz on this soon. thanks


2. Relevant equations



3. The attempt at a solution

rl.bhat Nov16-09 11:18 PM

Re: finding the resultant and eq. for 3 vector on one point
 
Hi needhelp 1, welcome to PF.
Do you know how to find the components of a vector along x and y axis?
If you know find the components and find ΣFx and ΣFy. Then find the resultant.

needhelp1 Nov16-09 11:22 PM

Re: finding the resultant and eq. for 3 vector on one point
 
Thx for the quick reply! Can you guild me through? I don't understand this chapter. I was sick during the week due to a bad flu.

rl.bhat Nov16-09 11:28 PM

Re: finding the resultant and eq. for 3 vector on one point
 
If A is a vector which makes an angle θ with the x axis, what is Ax and Ay?


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