The magnitude of the vertical force F is 80kN. If you resolve it in to components FAB and FAC that are parallel to the bars AB and AC, what are the magnitudes of the components? AB 30 degrees and AC 20 degrees.

Question

theeric · Answer

Hi! Have you tried drawing a picture?

theeric · Answer

@idontgetthisstuff ?

theeric · Answer

Is there a picture given, @idontgetthisstuff ?

theeric · Answer

Not a problem! :)
So, there is a picture given?

theeric · Answer

Okay! Thank you! I'm a little tired. I know I can do problems like these, but I don't see how it will work with those two angles.

theeric · Answer

What class is this for?

theeric · Answer

Oh jeez.... I underestimated this material, sorry! That makes no sense to me!

theeric · Answer

If that's physics, there's a physics section you can try to ask for help in if you get none here! http://openstudy.com/study#/groups/Physics

theeric · Answer

I'd wait for some math help though, maybe. There are smart people here!

theeric · Answer

Okay! Sorry I couldn't be of more help! I only split up vectors into orthogonal components. I never thought I'd see something like that. Do yo know what I mean?

parthkohli · Answer

What does that create 30 deg with?

theeric · Answer

Like, I would expect $\angle BAC=90^\circ$

parthkohli · Answer

Oh, the x and y axes are still there. This is just like resolving orthogonal components.

parthkohli · Answer

Do you know what dot product is?

theeric · Answer

It looks like axes are implied here.|dw:1389340355474:dw|