HELP on physics?? net forces? !?

lovee*

New member
So I am told that a box (10 kg) has three forces acting on it. a 10 N, a 15 N, and another 10 N. There are 2 more forces missing. I am suppose to find the magnitude of forces of F1 (horizontal) and F2(verticle) which are required to keep the crate from accelerating.

I then have to combine F1 and F2 into one force to find the magnitude and direction of this force.

here is the diagram and the question: http://i54.photobucket.com/albums/g86/xbanggg/proror.jpg?t=1288836666


HOW DO I DO THIS? if someone can help me out with this it would be wonderful!
thanks
 
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