For the frame and loading shown, determine the internal forces at the point indicated: J and K if the force acting on A and C are both changed from 250N to 250N. -80 mm- 80 mm 250 N Solution: B K 250 N C • From EBD, all reaction = . • At point J: 1. ΣF = 0: 1). Nomial force F = 120 mm 20 mm 20 mm 2). Shear force V = 40 mm 160 N Compression 2). Shear force V = 190 N Point outside the roof • At point K: 1. ΣF = 0: 1). Nomial force F = 160 3). Bending moment = 200 Nm tension under N Tension ◆ 19C N point into the roof 3). Bending moment = 150 Nm tension above ◆
For the frame and loading shown, determine the internal forces at the point indicated: J and K if the force acting on A and C are both changed from 250N to 250N. -80 mm- 80 mm 250 N Solution: B K 250 N C • From EBD, all reaction = . • At point J: 1. ΣF = 0: 1). Nomial force F = 120 mm 20 mm 20 mm 2). Shear force V = 40 mm 160 N Compression 2). Shear force V = 190 N Point outside the roof • At point K: 1. ΣF = 0: 1). Nomial force F = 160 3). Bending moment = 200 Nm tension under N Tension ◆ 19C N point into the roof 3). Bending moment = 150 Nm tension above ◆
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Homework #2
![### Transcription of Educational Content:
For the frame and loading shown, determine the internal forces at the points indicated: J and K if the force acting on A and C are both changed from 250 N to 250 N.
#### Diagram Description:
The diagram depicts a structural frame subjected to loads. The frame forms an inverted V shape with legs extending downwards. At the base, there are forces of 250 N each acting at points A and C. The structure has a horizontal top beam labeled B and vertical sections labeled J and K. Dimensions are given as follows:
- Horizontal sections from left support (A) to B and right support (C) to B are 80 mm each.
- Vertical distances between sections are 20 mm each, spaced over three sections from top to bottom.
#### Solution:
1. **From FBD, all reactions =**
2. **At Point J:**
- \( \Sigma F = 0 \)
1. Nominal force \( F = 160 \, \text{N} \) [Compression]
2. Shear force \( V = 190 \, \text{N} \) [Point outside the roof]
3. Bending moment \( = 20 \, \text{Nm} \) [Tension under]
3. **At Point K:**
- \( \Sigma F = 0 \)
1. Nominal force \( F = 160 \, \text{N} \) [Tension]
2. Shear force \( V = 190 \, \text{N} \) [Point into the roof]
3. Bending moment \( = 15 \, \text{Nm} \) [Tension above]
This solution outlines the calculation of internal forces at specified points in a structural frame subjected to load changes, providing insights into compression, shear, and bending moments.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F9a42e238-4116-4e80-81a7-f4d567b4bd0e%2Fd78fba28-e967-4fbc-918b-9dcf25f915ef%2Fwnce4k_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### Transcription of Educational Content:
For the frame and loading shown, determine the internal forces at the points indicated: J and K if the force acting on A and C are both changed from 250 N to 250 N.
#### Diagram Description:
The diagram depicts a structural frame subjected to loads. The frame forms an inverted V shape with legs extending downwards. At the base, there are forces of 250 N each acting at points A and C. The structure has a horizontal top beam labeled B and vertical sections labeled J and K. Dimensions are given as follows:
- Horizontal sections from left support (A) to B and right support (C) to B are 80 mm each.
- Vertical distances between sections are 20 mm each, spaced over three sections from top to bottom.
#### Solution:
1. **From FBD, all reactions =**
2. **At Point J:**
- \( \Sigma F = 0 \)
1. Nominal force \( F = 160 \, \text{N} \) [Compression]
2. Shear force \( V = 190 \, \text{N} \) [Point outside the roof]
3. Bending moment \( = 20 \, \text{Nm} \) [Tension under]
3. **At Point K:**
- \( \Sigma F = 0 \)
1. Nominal force \( F = 160 \, \text{N} \) [Tension]
2. Shear force \( V = 190 \, \text{N} \) [Point into the roof]
3. Bending moment \( = 15 \, \text{Nm} \) [Tension above]
This solution outlines the calculation of internal forces at specified points in a structural frame subjected to load changes, providing insights into compression, shear, and bending moments.
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