Let V,..., Vk be points in R and suppose that for j = 1,..., k an object with mass m; is located at point v. Physicists call such objects point masses. The total mass of the system of point masses is m = m + ... + mk. The center of mass of the system is 1 v = (mv + ... + mkvk). m Compute the center of mass of the system consisting of the following point masses. Point (5,-4,3) (4,3,-2) (-4,-3,-1) (-9, 8, 6) Mass 2 g. 5 g. 2 g. 1 g.