Explain why shoulder bags are provided with broad straps and not thin strap.

Explanation

### Step-by-Step Solution:

1. **Understanding the Concept of Pressure**:
- Pressure is defined as the force applied per unit area. The formula for pressure is given by:
\[ \text{Pressure} = \frac{\text{Force}}{\text{Area}} \]
- In this context, the force is the weight of the bag being carried.
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