The masses $m_i$ are located at the points $P_i.$ Answer the following questions.

$m_1=4,m_2=6,m_3=6,$ and $m_4=10$

$P_1(-2,-3),P_2(7,4),P_3(3,-2),P_4(-4,3)$

Find the moment $M_y$ of the system about the $y-$axis.

Answer: $M_v=$

$2.$ Find the moment $M_x$ of the system about the $x-$axis.

Answer: $M_x=$

$3.$ Find the center of mass $(\stackrel{}{x}\frac{,}{b}ar(y))$ of the system.

Answer: $\stackrel{}{x}=$ and $\frac{?}{\text{b}\text{a}\text{r}}(y)=$