Find the Center of Mass of the Linear System $m _ { 1 } = 2 , x _ { 1 } = - 3 , m _ { 2 } = 8$

Multiple Choice

Find the center of mass of the linear system $m _ { 1 } = 2 , x _ { 1 } = - 3 , m _ { 2 } = 8$ $x _ { 2 } = - 1 , m _ { 3 } = 3$ $x _ { 3 } = 1 , m _ { 4 } = 5 , x _ { 4 } = 4$

A) 9
B) $\frac { 1 } { 2 }$
C) $- \frac { 1 } { 2 }$
D) 0
E) $\frac { 2 } { 3 }$
F) $- \frac { 2 } { 3 }$
G) $- 9$
H) 18