The mass of the earth is 6 × 1024 kg and that of the moon is 7.4 × 1022 kg. If the center-to-center distance between the earth and the moon is 3.84×105 km, calculate the force exerted by the earth on the moon. (Take G = 6.7 × 10-11 N m2 kg-2)
1
2.02 × 1022 N
2
2.02 × 1016 N
3
2.02 × 1018 N
4
2.02 × 1020 N