Weight of a body is maximum at

Options

A. poles
B. equator
C. centre of earth
D. at latitude `45^(@)`

Explanation

To determine where the weight of a body is maximum, we need to understand the relationship between weight, gravity, and the Earth's shape.

### Step-by-Step Solution:

1. **Understanding Weight**:
- The weight \( W \) of a body is given by the formula:
\[ W = mg \]
where \( m \) is the mass of the body and \( g \) is the acceleration due to gravity.

2. **Acceleration due to Gravity**:
- The value of \( g \) varies depending on the location on Earth. It is influenced by the Earth's shape (oblateness) and the distance from the center of the Earth.

3. **Effect of Earth's Shape**:
- The Earth is not a perfect sphere; it is slightly flattened at the poles and bulging at the equator. This means that the radius of the Earth at the poles is less than the radius at the equator.

4. **Comparison of Gravity at Different Locations**:
- The acceleration due to gravity \( g \) is maximum at the poles because:
- The distance from the center of the Earth is less at the poles compared to the equator.
- The formula for gravitational acceleration is:
\[ g = \frac{GM}{r^2} \]
where \( G \) is the gravitational constant, \( M \) is the mass of the Earth, and \( r \) is the distance from the center of the Earth.

5. **Conclusion**:
- Since \( g \) is maximum at the poles, and weight is directly proportional to \( g \), the weight of a body is also maximum at the poles.

### Final Answer:
The weight of a body is maximum at the poles.