Radius of moon is 1//4 times that of ear...

Radius of moon is `1//4` times that of earth and mass is 1/81 times that of earth. The point at which gravitational field due to earth becomes equal and opposite to that of moon, is (Distance between centres of earth and moon is 60R, where R is radius of earth

5.75 R from centre of moon

16 R from surface of moon

53 R from centre of earth

54 R from centre of eart

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