1905 lb 4385 Ib-ft B. 3.0' 3.0 '- 3.0'

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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**Shear and Moment Diagrams for a Loaded Beam**

**Beam Description:**
- A simply supported beam with supports at points A and B.
- Total length: 9 ft, divided into three equal sections of 3 ft each.
- A point load of 1905 lb is applied at 3 ft from the left end (A).
- A moment of 4385 lb-ft is applied at 6 ft from the left end (A).

**Shear and Moment Diagrams Explanation:**

- **Shear Diagram:**
  - Shows the variation of shear force along the length of the beam.
  - Positive or negative values indicate the direction of shear forces.

- **Moment Diagram:**
  - Illustrates the bending moment along the beam’s length.
  - Peaks and troughs indicate areas of maximum bending stress.

**Distance and Forces:**
- Distance \( x \) is measured from point A to the right.

**Questions and Calculations:**

1. **At \( x = 1.2 \, \text{ft} \):**
   - Shear Force (\( V \)) = 1757.22 lb
   - Moment (\( M \)) = 2108.664 lb-ft

2. **At \( x = 4.6 \, \text{ft} \):**
   - Shear Force (\( V \)) = -147.78 lb
   - Moment (\( M \)) = -5035.212 lb-ft

3. **At \( x = 7.6 \, \text{ft} \):**
   - Shear Force (\( V \)) = 147.78 lb
   - Moment (\( M \)) = 206.892 lb-ft

These calculated values reflect the effects of the applied load and moment as well as the resulting shear and bending moments at specified points along the beam.
Transcribed Image Text:**Shear and Moment Diagrams for a Loaded Beam** **Beam Description:** - A simply supported beam with supports at points A and B. - Total length: 9 ft, divided into three equal sections of 3 ft each. - A point load of 1905 lb is applied at 3 ft from the left end (A). - A moment of 4385 lb-ft is applied at 6 ft from the left end (A). **Shear and Moment Diagrams Explanation:** - **Shear Diagram:** - Shows the variation of shear force along the length of the beam. - Positive or negative values indicate the direction of shear forces. - **Moment Diagram:** - Illustrates the bending moment along the beam’s length. - Peaks and troughs indicate areas of maximum bending stress. **Distance and Forces:** - Distance \( x \) is measured from point A to the right. **Questions and Calculations:** 1. **At \( x = 1.2 \, \text{ft} \):** - Shear Force (\( V \)) = 1757.22 lb - Moment (\( M \)) = 2108.664 lb-ft 2. **At \( x = 4.6 \, \text{ft} \):** - Shear Force (\( V \)) = -147.78 lb - Moment (\( M \)) = -5035.212 lb-ft 3. **At \( x = 7.6 \, \text{ft} \):** - Shear Force (\( V \)) = 147.78 lb - Moment (\( M \)) = 206.892 lb-ft These calculated values reflect the effects of the applied load and moment as well as the resulting shear and bending moments at specified points along the beam.
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