A 3ft long bar with a 1in x 1in cross section is subjected to a 14,153lb tensile load. What is the tensile stress in ksi? Answer to two decimal places. Type your answer...

Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
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Chapter7: Length And Length-related Variables In Engineering
Section: Chapter Questions
Problem 43P: A 10 cm long rectangular bar (when subjected to a tensile load) deforms by 0.1 mm. Calculate the...
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**Problem Statement:**

A 3-ft long bar with a 1 in x 1 in cross-section is subjected to a 14,153 lb tensile load. What is the tensile stress in ksi? Answer to two decimal places.

*Type your answer...*

**Explanation:**

To find the tensile stress (σ) in ksi (kilo-pounds per square inch), use the formula:

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

Where:
- \( F \) = Force in pounds (lb)
- \( A \) = Cross-sectional area in square inches (in²)

Given:
- \( F = 14,153 \) lb
- Cross-sectional dimensions = 1 in x 1 in, so
- \( A = 1 \times 1 = 1 \) in²

Calculate the tensile stress in psi (pounds per square inch) first:

\[ \sigma = \frac{14,153 \, \text{lb}}{1 \, \text{in}^2} = 14,153 \, \text{psi} \]

To convert psi to ksi (1 ksi = 1,000 psi):

\[ \sigma = \frac{14,153}{1,000} = 14.15 \, \text{ksi} \]

Thus, the tensile stress is **14.15 ksi**.
Transcribed Image Text:**Problem Statement:** A 3-ft long bar with a 1 in x 1 in cross-section is subjected to a 14,153 lb tensile load. What is the tensile stress in ksi? Answer to two decimal places. *Type your answer...* **Explanation:** To find the tensile stress (σ) in ksi (kilo-pounds per square inch), use the formula: \[ \sigma = \frac{F}{A} \] Where: - \( F \) = Force in pounds (lb) - \( A \) = Cross-sectional area in square inches (in²) Given: - \( F = 14,153 \) lb - Cross-sectional dimensions = 1 in x 1 in, so - \( A = 1 \times 1 = 1 \) in² Calculate the tensile stress in psi (pounds per square inch) first: \[ \sigma = \frac{14,153 \, \text{lb}}{1 \, \text{in}^2} = 14,153 \, \text{psi} \] To convert psi to ksi (1 ksi = 1,000 psi): \[ \sigma = \frac{14,153}{1,000} = 14.15 \, \text{ksi} \] Thus, the tensile stress is **14.15 ksi**.
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