FörberedandeFysik

\displaystyle \displaystyle \mathbf{r_G} = \frac{4\textrm{kg}(0,5;\,0,5)\textrm{m}+4\textrm{kg}(0,5;\,-0,5)\textrm{m}-1\textrm{kg}(0,75;\,-0,75)\textrm{m}}{4\, \textrm{kg} + 4\,\textrm{kg} - 1\,\textrm{kg}}

\displaystyle \displaystyle = \frac{(3,25;\,0,75)}{7}\textrm{m} = (0,46;\,0,11)\,\textrm{m}