3つの質点の質量中心

${\displaystyle x_G=\frac{m\cdot 2+2m\cdot 2+3m\cdot 2}{m+2m+3m}=\frac{12}{6}=2}$

${\displaystyle y_G=\frac{m\cdot 2+2m\cdot \left(-1\right)+3m\cdot 0}{m+2m+3m}=\frac{0}{6}=0}$

${\displaystyle z_G=\frac{m\cdot 3+2m\cdot 0+3m\cdot 1}{m+2m+3m}=\frac{6}{6}=1}$

${\displaystyle r_G=\left(x_G,y_G,z_G\right)=\left(2,0,1\right)\left[\text{m}\right]}$

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