Which of these is aimed towards increasing the pressure exerted on a body?

Options

A. Broad feet of a camel
B. Broad shoulder straps of bags
C. Pointed edges of knives and axes
D. Eight tyres provided in heavy trucks

Answer

To determine which option is aimed at increasing the pressure exerted on a body, we first need to understand the concept of pressure.

### Step-by-Step Solution:

1. **Define Pressure**:
Pressure is defined as the force applied per unit area. Mathematically, it is expressed as:
\[ \text{Pressure} (P) = \frac{\text{Force} (F)}{\text{Area} (A)} \]
This means that pressure increases with an increase in force or a decrease in area.

2. **Analyze Each Option**:
- **Option 1: Broad feet of a camel**:
- Broad feet mean a larger area of contact with the ground.
- Since pressure is inversely proportional to area, increasing the area will decrease the pressure.
- Therefore, this option does not increase pressure.

- **Option 2: Broader shoulder strap of a bag**:
- A broader strap means a larger area over which the weight of the bag is distributed.
- Similar to the first option, increasing the area will decrease the pressure on the shoulders.
- Thus, this option also does not increase pressure.

- **Option 3: Pointed edges of a knife and axes**:
- Pointed edges mean a smaller area of contact.
- A smaller area with the same force applied results in increased pressure.
- Therefore, this option does increase pressure.

- **Option 4: 8 Tyres provided in any heavy truck**:
- More tyres mean the weight of the truck is distributed over a larger area.
- This would decrease the pressure exerted by each tyre on the ground.
- Hence, this option does not increase pressure.

3. **Conclusion**:
The option that is aimed towards increasing the pressure exerted on a body is **Option 3: Pointed edges of a knife and axes**.

### Final Answer:
**Pointed edges of a knife and axes** (Option 3) is aimed towards increasing the pressure exerted on a body.

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