We can use the formula for the gravitational force:
$F_G = G \frac{m_1 m_2}{r^2}$
where $F_G$ is the gravitational force, $G$ is the gravitational constant ($6.674 \times 10^{-11} Nm^2/kg^2$), $m_1$ and $m_2$ are the masses of the Earth and the space station,
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