What is the magnitude of the gravitational force between the earth and a $1 \,kg$ object on its surface (in $,N$)? (Mass of the earth is $6 \times 10^{24} \,kg$ and radius of the earth is $6.4 \times 10^6 \,m$.)

  • A
    $8.9$
  • B
    $9.8$
  • C
    $5.3$
  • D
    $2.3$

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