Four forces F1,F2,F3 and F4 such that F1=3i-j+ 9k ,F2= 2i -2j + 16k .,F3= 9i+j+18k and F4= i+ 2j - 18k. If all the forces simultaneously act on a particle at rest at the origin of the co ordinate system then the particle would begin to move in a plane .Identify that plane.

Xz plane

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