67 \times 10^{-11} \, \text{N} \cdot \text{m}^2/\text{kg}^2 \) (gravitational constant)
\( m_{1} = 5.98 \times 10^{24} \, \text{kg} \) (mass of Earth)
\( m_{2} = 7.36 \times 10^{22} \, \text{kg} \) (mass of Moon)
\( r = 3.84 \times 10^8 \, \text{m} \) (average
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