The radius of the earth is 6.37 xx 10^(6...

The radius of the earth is `6.37 xx 10^(6)` m and its mean density is `5.5 xx 10^(3) "kg m"^(-3)` and `G = 6.67 xx 10^(-11) "N-m"^(2) kg^(-2)` Find the gravitational potential on the surface of the earth.

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