What is the value of acceleration due to gravity and the weight of a body at the centre of the earth ?

Explanation

To find the value of acceleration due to gravity and the weight of a body at the center of the Earth, we can follow these steps:

### Step 1: Understand the formula for acceleration due to gravity
The acceleration due to gravity (g) at a distance r from the center of a planet is given by the formula:
\[ g = \frac{G \cdot M}{r^2} \]
where:
- \( G \) is the universal gravitational constant,
- \( M \) is the mass of the planet,
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