For the direct shear example shown below, if F = 47 kN, AAB = AcD = 3151 mm², the average shear stress in the internal vertical surface AB CD), t = MPa. Calculate your answer to 1 decimal place.
For the direct shear example shown below, if F = 47 kN, AAB = AcD = 3151 mm², the average shear stress in the internal vertical surface AB CD), t = MPa. Calculate your answer to 1 decimal place.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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![### Direct Shear Stress Calculation
**Problem Statement:**
For the direct shear example shown below, if \( F = 47 \, \text{kN} \), \( A_{AB} = A_{CD} = 3151 \, \text{mm}^2 \), the average shear stress in the internal vertical surface AB (or CD), \( \tau = \_\_\_\_\_\ \text{MPa} \).
Calculate your answer to 1 decimal place.
---
**Diagram Explanation:**
The image shows a diagram of a 3D block structure consisting of two rectangular prisms labeled A, B, and C, with a force labeled \( F \) acting downwards on the top surface between points A and C. The force is causing a direct shear stress on the vertical internal surfaces labeled AB (or CD).
**Solution:**
To calculate the average shear stress (\( \tau \)):
1. Use the formula for shear stress:
\[
\tau = \frac{F}{A}
\]
where \( F \) is the force applied and \( A \) is the area over which the force is applied.
2. With given values:
- \( F = 47 \, \text{kN} = 47000 \, \text{N} \)
- \( A = 3151 \, \text{mm}^2 = 0.003151 \, \text{m}^2 \)
3. Substitute the values:
\[
\tau = \frac{47000}{0.003151} = 14916.22 \, \text{Pa} = 14.9 \, \text{MPa}
\]
4. Calculate to 1 decimal place:
\[
\tau = 14.9 \, \text{MPa}
\]
Thus, the average shear stress on the internal vertical surface AB (or CD) is **14.9 MPa**.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0daff6b4-7b3b-4798-aa81-781ef422795b%2F432ce851-d148-46d0-954d-62906b724d9f%2F9re79t_processed.png&w=3840&q=75)
Transcribed Image Text:### Direct Shear Stress Calculation
**Problem Statement:**
For the direct shear example shown below, if \( F = 47 \, \text{kN} \), \( A_{AB} = A_{CD} = 3151 \, \text{mm}^2 \), the average shear stress in the internal vertical surface AB (or CD), \( \tau = \_\_\_\_\_\ \text{MPa} \).
Calculate your answer to 1 decimal place.
---
**Diagram Explanation:**
The image shows a diagram of a 3D block structure consisting of two rectangular prisms labeled A, B, and C, with a force labeled \( F \) acting downwards on the top surface between points A and C. The force is causing a direct shear stress on the vertical internal surfaces labeled AB (or CD).
**Solution:**
To calculate the average shear stress (\( \tau \)):
1. Use the formula for shear stress:
\[
\tau = \frac{F}{A}
\]
where \( F \) is the force applied and \( A \) is the area over which the force is applied.
2. With given values:
- \( F = 47 \, \text{kN} = 47000 \, \text{N} \)
- \( A = 3151 \, \text{mm}^2 = 0.003151 \, \text{m}^2 \)
3. Substitute the values:
\[
\tau = \frac{47000}{0.003151} = 14916.22 \, \text{Pa} = 14.9 \, \text{MPa}
\]
4. Calculate to 1 decimal place:
\[
\tau = 14.9 \, \text{MPa}
\]
Thus, the average shear stress on the internal vertical surface AB (or CD) is **14.9 MPa**.
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