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.

Explanation

To find the gravitational potential on the surface of the Earth, we can follow these steps:

### Step 1: Understand the formula for gravitational potential
The gravitational potential \( V \) at a distance \( r \) from the center of a mass \( M \) is given by the formula:
\[ V = -\frac{G M}{r} \]
where \( G \) is the gravitational constant.
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