Three forces act simultaneously on a small object located at the origin of an xyz coordinate system.
• F1 has magnitude 120N and is directed along 2i^+3j^−2k^.
• F2 has magnitude 80N and is directed along −i^+4j^+2k^.
A third force F3 is applied so the object remains in equilibrium.
Determine the components of F3 in unit-vector notation.