Three dimensions. three point particles are fixed in place in an xyz coordinate system. particlea, at the origin, has massma. particleb, at xyz coordinates (2.00d, 1.00d,2.00d), has mass 2.00ma, and particle c, at coordinates (-1.00d, 2.00d, -3.00d), has mass 3.00mn. a fourth particled, with mass 4.00ma, is to be placed near the other particles. in terms of distance d, at what (a) x, (b) y, and (b) z coordinate should d be placed so that the net gravitational force on a from b, c, andd is zero?