You're hanging from a chinning bar, with your arms at right angles to each other.

You're hanging from a chinning bar, with your arms at right angles to each other. The magnitudes of the forces exerted by both your hands are the same, and together they exert just enough upward force to support your weight, 620 N. (a) Sketch the two force vectors for your arms, along with their resultant, and (b) use components to find the magnitude of each of the two "arm" force vectors. ?????