A bar is subjected to a tensile load of 200 N. The cross section of the bar is 20 mm x 5

mm. Find the tensile stress of bar.

The tensile stress (\( \sigma \)) on a bar subjected to a tensile load is calculated using the formula:

\[
\sigma = \frac{F}{A}
\]

Where:
- \( F \) is the tensile force applied to the bar.
- \( A \) is the cross-sectional area of the bar.

### Given:
- Tensile force, \( F = 200 \, \text{N} \)
- Cross-sectional dimensions of the bar: \( 20 \, \text{mm} \times 5 \, \text{mm} \)

First, calculate the cross-sectional area (\( A \)):

\[
A = 20 \, \text{mm} \times 5 \, \text{mm} = 100 \, \text{mm}^2 = 100 \times 10^{-6} \, \text{m}^2 = 0.0001 \, \text{m}^2
\]

Now, calculate the tensile stress:

\[
\sigma = \frac{200 \, \text{N}}{0.0001 \, \text{m}^2} = 2,000,000 \, \text{N/m}^2 = 2 \, \text{MPa}
\]

### Tensile stress:
\[
\sigma = 2 \, \text{MPa}
\]

Would you like further details or clarifications on this problem?

Here are 5 related questions:
1. What is the unit of tensile stress?
2. How would the stress change if the cross-sectional area doubled?
3. What happens to the tensile stress if the force is reduced by half?
4. How can tensile stress be reduced in a real-world scenario?
5. What are typical applications where tensile stress is crucial to consider?

**Tip:** Always ensure that force and area are in consistent units when calculating stress!

A bar is subjected to a tensile load of 200 N. The cross section of the bar is 20 mm x 5 mm. Find the tensile stress of the bar.

Learn how to calculate the tensile stress of a bar subjected to a 200 N load with a cross-sectional area of 20 mm x 5 mm. This detailed step-by-step solution covers key concepts in physics and mechanics, including the tensile stress formula. Suitable for students in Grades 9-12.

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