three particle system with with masses: m1 = 2.0 Kg, m2 = 4.0 Kg and m3 = 8.0 Kg. The position co-ordinates for particle 1 are (3,3), for particle 2 are (2,1) and for particle 3 are (1,2). What will be the y coordinate of the system s center of mass?

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