The gravitational force between two point masses $m_1$ and $m_2$ at a separation $r$ is given by $F = k \frac{m_1 m_2}{r^2}$. The constant $k$:

  • A
    Depends on the system of units only.
  • B
    Depends on the medium between the masses only.
  • C
    Depends on both $(a)$ and $(b)$.
  • D
    Is independent of both $(a)$ and $(b)$.

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