How Can I Find Force Components at D and C Using Moments?

[hockeyguy314]

Homework Statement

Find the components of the force at D and C using moments

picture attached

Homework Equations

M=F x r

The Attempt at a Solution

I'm really stuck on this one. The force from the 70 kg weight is 70*9.8 = 686N, so F=-686j. I found the moment about point C to be M_c=1715k. After that, I'm not sure where to go. I'm also really thrown off by the white line that's at a 60° angle below the x axis. Any help would be greatly appreciated. Thanks.

 

[pongo38]

It looks to me that the white line is an arrow representing the force required to keep the device in equilibrium. Does that help?

 

[hockeyguy314]

Yes, it does help thank you. I still don't know where to go from here though. I guess I'm not really sure how the moment about C would translate into components of force.

 

[pongo38]

Well, do you not know enough to be able to calculate the white force itself, even if you don't know its components?