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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![**Problem Statement:**
The slender 12-kg bar has a clockwise angular velocity of \( \omega = 2 \, \text{rad/s} \) when it is in the position shown. Suppose that \( L = 2.9 \, \text{m} \). *(Figure 1)*
---
**Part A:**
Determine its angular acceleration, measured clockwise.
- **Expression:** Enter your answer using three significant figures. Enter a positive value if the angular acceleration is clockwise and a negative value if the angular acceleration is counterclockwise.
\[
\alpha = \_\_\_ \, \text{rad/s}^2
\]
- **Submit Button**: [Submit]
- **Request Answer Link**: [Request Answer]
---
**Part B:**
Determine the magnitude of the normal reaction of the smooth surface \( A \) at this instant.
- **Expression:** Express your answer to three significant figures and include the appropriate units.
\[
N_A = \_\_\_ \, \text{Units}
\]
- **Submit Button**: [Submit]
- **Request Answer Link**: [Request Answer]
---
**Part C:**
Determine the magnitude of the normal reaction of the smooth surface \( B \) at this instant.
- **Expression:** Express your answer to three significant figures and include the appropriate units.
\[
N_B = \_\_\_ \, \text{Units}
\]
- **Submit Button**: [Submit]
- **Request Answer Link**: [Request Answer]
---
**Figure Description:**
The diagram shows a slender bar making an angle of \( 60^\circ \) with the horizontal surface. The bar has length \( L = 2.9 \, \text{m} \). It is positioned between two smooth surfaces labeled \( A \) and \( B \). The angular motion and direction are indicated around the point of contact. The figure is numbered as 1 of 1.
---
**Instructions:**
Please provide solutions with appropriately calculated values in the spaces provided. Ensure that all numerical answers are accurate to three significant figures.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F860684ff-358d-40fc-9935-b5f7a307300b%2Fe0653c72-cd33-4c8e-a65a-4917a195a662%2Fj2fb21h_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Problem Statement:**
The slender 12-kg bar has a clockwise angular velocity of \( \omega = 2 \, \text{rad/s} \) when it is in the position shown. Suppose that \( L = 2.9 \, \text{m} \). *(Figure 1)*
---
**Part A:**
Determine its angular acceleration, measured clockwise.
- **Expression:** Enter your answer using three significant figures. Enter a positive value if the angular acceleration is clockwise and a negative value if the angular acceleration is counterclockwise.
\[
\alpha = \_\_\_ \, \text{rad/s}^2
\]
- **Submit Button**: [Submit]
- **Request Answer Link**: [Request Answer]
---
**Part B:**
Determine the magnitude of the normal reaction of the smooth surface \( A \) at this instant.
- **Expression:** Express your answer to three significant figures and include the appropriate units.
\[
N_A = \_\_\_ \, \text{Units}
\]
- **Submit Button**: [Submit]
- **Request Answer Link**: [Request Answer]
---
**Part C:**
Determine the magnitude of the normal reaction of the smooth surface \( B \) at this instant.
- **Expression:** Express your answer to three significant figures and include the appropriate units.
\[
N_B = \_\_\_ \, \text{Units}
\]
- **Submit Button**: [Submit]
- **Request Answer Link**: [Request Answer]
---
**Figure Description:**
The diagram shows a slender bar making an angle of \( 60^\circ \) with the horizontal surface. The bar has length \( L = 2.9 \, \text{m} \). It is positioned between two smooth surfaces labeled \( A \) and \( B \). The angular motion and direction are indicated around the point of contact. The figure is numbered as 1 of 1.
---
**Instructions:**
Please provide solutions with appropriately calculated values in the spaces provided. Ensure that all numerical answers are accurate to three significant figures.
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