Sketch the internal shear and moment as a function of the beam length (triangle denotes a pin boundary condition): a = L/4 Pl PL R A A a L B R₂ B

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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**Beam Analysis: Internal Shear and Moment**

The image describes the setup for analyzing the internal shear and moment distribution along a beam. It provides the following details:

- **Beam Configuration:**
  - A horizontal beam is labeled as AB.
  - The beam is subjected to two downward forces, each denoted as \(P\).

- **Support Conditions:**
  - Point A is supported by a pin, represented as a triangle, indicating a pin boundary condition. This allows rotation but not translation.
  - Point B is supported by a roller, which is depicted as a circle. This allows horizontal displacement but prevents vertical movement.

- **Geometry:**
  - The total length of the beam is \(L\).
  - Each force \(P\) is located at a distance \(a\) from the nearest support, where \(a = L/4\).

- **Diagram Annotations:**
  - The left support, at A, exerts an upward reaction force \(R_A\).
  - The right support, at B, provides another reaction force \(R_B\).
  - Segment AC, from point A to the first load, is \(a\) in length.
  - Segment CB is \(L-a-a\) or \(L/2\) as loads divide beam symmetrically.

This setup is typically used to determine the internal shear force and bending moment distributions along the beam as functions of the distance from the left support A.
Transcribed Image Text:**Beam Analysis: Internal Shear and Moment** The image describes the setup for analyzing the internal shear and moment distribution along a beam. It provides the following details: - **Beam Configuration:** - A horizontal beam is labeled as AB. - The beam is subjected to two downward forces, each denoted as \(P\). - **Support Conditions:** - Point A is supported by a pin, represented as a triangle, indicating a pin boundary condition. This allows rotation but not translation. - Point B is supported by a roller, which is depicted as a circle. This allows horizontal displacement but prevents vertical movement. - **Geometry:** - The total length of the beam is \(L\). - Each force \(P\) is located at a distance \(a\) from the nearest support, where \(a = L/4\). - **Diagram Annotations:** - The left support, at A, exerts an upward reaction force \(R_A\). - The right support, at B, provides another reaction force \(R_B\). - Segment AC, from point A to the first load, is \(a\) in length. - Segment CB is \(L-a-a\) or \(L/2\) as loads divide beam symmetrically. This setup is typically used to determine the internal shear force and bending moment distributions along the beam as functions of the distance from the left support A.
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