Find the center of mass of the given system of point masses lying on the x-axis. m =7, m2 = 3, m3 = 7 X1 -5, x2 = 0, x3 = 4 Let m; be the mass of the ith element and x; be the position of the ith element. Recall that the center of mass is given by i=1 n i=1 mi Xi and EM y == 1 WE 1-1 m Yi Since all the point masses lie on the x-axis, we know that y