$(1$ point$)$

Four particles are located at points $(1,2),(2,2),(3,4),(4,3).$

Find the moments $M_x$ and $M_y$ and the center of mass of the system, assuming that the particles have equal mass $m.$

$M_x=$

$M_y=$

$x_{CM}=$

$y_{CM}=$

Find the center of mass of the system, assuming the particles have mass $3,2,5,$ and $7,$ respectively.

$x_{CM}=$

$y_{CM}=$