Why the centre of gravity coincides with the centre of mass only if the size of the body is small ?

Explanation

To understand why the center of gravity coincides with the center of mass only if the size of the body is small, we can break down the explanation into several steps:

### Step-by-Step Solution:

1. **Definition of Center of Mass and Center of Gravity**:
- The **center of mass** of a body is the point where the mass of the body can be considered to be concentrated for translational motion.
- The **center of gravity** is the point where the total weight of the body acts, and it depends on the distribution of gravitational forces acting on the body.

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