Why is one end of a sewing needle made pointed?

Options

A. to increase the force
B. to increase the pressure
C. to decrease the weight
D. none of the above.

Answer

**Step-by-Step Solution:**

1. **Understanding Pressure**: Pressure is defined as the force applied per unit area. The formula for pressure is given by:
\[ \text{Pressure} = \frac{\text{Force}}{\text{Area}} \]

2. **Effect of Area on Pressure**: From the formula, we can see that pressure is inversely proportional to the area. This means that if the area is smaller, the pressure will be greater, assuming the force remains constant.

3. **Design of the Sewing Needle**: A sewing needle has one pointed end. This pointed end is designed to have a smaller cross-sectional area compared to the other end of the needle.

4. **Increase in Pressure**: By making the end of the needle pointed (thin), the area of the needle that comes into contact with the fabric is reduced. As a result, when the same amount of force is applied (for example, when pushing the needle through fabric), the pressure exerted by the needle increases.

5. **Conclusion**: The pointed end of the sewing needle is designed this way to increase the pressure, allowing it to easily penetrate through the fabric. This makes sewing more efficient.

**Final Answer**: The pointed end of a sewing needle is made pointed to increase the pressure, allowing it to easily penetrate through fabric.

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