B) If the resultant force and couple pair is replaced by a single resultant force, where does its line of action intersects a vertical line along OB, measured from O?
B) If the resultant force and couple pair is replaced by a single resultant force, where does its line of action intersects a vertical line along OB, measured from O?
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
Related questions
Question
For the structure and loading system shown:
B) If the resultant force and couple pair is replaced by a single resultant force, where does its line of action intersects a vertical line along OB, measured from O?
![### Analysis of Forces and Resultant Movements on a Structure
#### Problem Statement:
The image shows a structural system subjected to various loads. The structure consists of two main members, arranged perpendicularly to each other.
#### Description of the Structure:
- **Horizontal Member (AB):**
- Point B has an applied load of 300 lb at an angle of \( \cos^{-1}(\frac{3}{5}) \) from the horizontal.
- Point A has a downward load of 50 lb, positioned 1 ft from point B.
- Point A also has a leftward load of 100 lb.
- The total length between points A and B is 2 ft, with point A located 1 ft from the left end of the horizontal member.
- **Vertical Member (CD):**
- Positioned vertically from point A to a base support at point O.
- Point C has a downward load of 50 lb, located 1 ft from A down to C, with another 50 lb to the left at point O.
- The length from A to C is 3 ft, with sections of 1 ft each from base O and to loading points.
#### Given Task:
B) Determine the location where a single resultant force, replacing the given forces and their moments, intersects a vertical line along the member OB, measured from point O.
#### Graphical Notation and Dimensions:
- **Coordinate Axes:**
- The x-axis is horizontal, and the y-axis is vertical.
- **Spatial Configuration:**
- Points on the structure are labeled as A, B, C, and O with respective distances.
- A rigid base at point O supports the vertical member.
### Steps for Solution (Provided Explanations):
1. **Resultant Force (FR):**
- Sum all the vertical and horizontal forces to find the components of the resultant force \( \vec{F_R} \).
2. **Moment (MR = MO):**
- Calculate the moments caused by the distributed forces about point O to find the total moment \( M_O \).
3. **Line of Action:**
- Determine the point where the resultant force intersects the line OB using the relationship between net force, moments, and distances from point O to give the precise location.
### Conclusion:
This analysis enables the understanding of how complex force interactions can be represented as a single resultant force and moment, simplifying the](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F225ea937-ec91-4f60-983d-e6a97001b794%2Fd68773ff-8f24-42bb-bc79-038b0ae241ba%2Fp3hz37m_processed.png&w=3840&q=75)
Transcribed Image Text:### Analysis of Forces and Resultant Movements on a Structure
#### Problem Statement:
The image shows a structural system subjected to various loads. The structure consists of two main members, arranged perpendicularly to each other.
#### Description of the Structure:
- **Horizontal Member (AB):**
- Point B has an applied load of 300 lb at an angle of \( \cos^{-1}(\frac{3}{5}) \) from the horizontal.
- Point A has a downward load of 50 lb, positioned 1 ft from point B.
- Point A also has a leftward load of 100 lb.
- The total length between points A and B is 2 ft, with point A located 1 ft from the left end of the horizontal member.
- **Vertical Member (CD):**
- Positioned vertically from point A to a base support at point O.
- Point C has a downward load of 50 lb, located 1 ft from A down to C, with another 50 lb to the left at point O.
- The length from A to C is 3 ft, with sections of 1 ft each from base O and to loading points.
#### Given Task:
B) Determine the location where a single resultant force, replacing the given forces and their moments, intersects a vertical line along the member OB, measured from point O.
#### Graphical Notation and Dimensions:
- **Coordinate Axes:**
- The x-axis is horizontal, and the y-axis is vertical.
- **Spatial Configuration:**
- Points on the structure are labeled as A, B, C, and O with respective distances.
- A rigid base at point O supports the vertical member.
### Steps for Solution (Provided Explanations):
1. **Resultant Force (FR):**
- Sum all the vertical and horizontal forces to find the components of the resultant force \( \vec{F_R} \).
2. **Moment (MR = MO):**
- Calculate the moments caused by the distributed forces about point O to find the total moment \( M_O \).
3. **Line of Action:**
- Determine the point where the resultant force intersects the line OB using the relationship between net force, moments, and distances from point O to give the precise location.
### Conclusion:
This analysis enables the understanding of how complex force interactions can be represented as a single resultant force and moment, simplifying the
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