3-25. The bucket shown in Figure P3-25 pivots at A and has the forces shown acting on it. Deter- mine the moment about A. FIGURE P3-25 8" 10 lb |--15- 26 lb 12

Elements Of Electromagnetics
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### Mechanics of Materials - Educational Resource

#### Figure P3–23:
A structural shape subjected to a force is shown in the figure where a 60 lb force is applied at an angle of 50 degrees. Additionally, an 80 lb force is applied horizontally at the top. The dimensions of the structure, height of 2 ft for both upper and lower parts, are indicated. There is a marked point A, 3 ft from the vertically applied load.

#### Problem 3–24:
**Objective:** Find the moment about point A for the lever shown in:
- (a) Figure P3–24a
- (b) Figure P3–24b

**Figure P3–24a:**
The diagram shows a symmetrical lever with an applied force of 30 N at an angle of 70 degrees on both sides of point A. The distances from the point of force application to point A are 0.1 m and 0.3 m.

**Figure P3–24b:**
Similar to Figure P3-24a, this diagram also depicts forces of 30 N applied at an angle of 70 degrees. The distances from the application points to point A are both 0.2 m.

#### Figure P3–25:
This figure illustrates a bucket pivoting at point A, with forces acting on it as follows:
- A 26 lb force acting vertically downwards at a distance of 12 in from point A
- A 10 lb load acting horizontally at a distance of 8 in from point A
- Another load acting horizontally at 15 in

**Problem 3–25:** Determine the moment about point A for the given system.

### Explanation of Diagrams and Graphs:
**Figure P3–23:** Depicts a composite shape with dimensions and forces applied. The primary goal is to understand the force effects creating a moment about a specific point 'A'.

**Figures P3–24a and P3–24b:** These figures focus on levers with forces applied at certain angles and distances from a pivot point. The task is to determine how these forces create a moment about the pivot point.

**Figure P3–25:** Similar to the previous figures, this one focuses on calculating the moment produced by various forces acting on a pivoting mechanism (bucket).

This educational task measures the comprehension of moments created by applied forces on different structures which is fundamental in mechanics of materials and structural analysis.
Transcribed Image Text:### Mechanics of Materials - Educational Resource #### Figure P3–23: A structural shape subjected to a force is shown in the figure where a 60 lb force is applied at an angle of 50 degrees. Additionally, an 80 lb force is applied horizontally at the top. The dimensions of the structure, height of 2 ft for both upper and lower parts, are indicated. There is a marked point A, 3 ft from the vertically applied load. #### Problem 3–24: **Objective:** Find the moment about point A for the lever shown in: - (a) Figure P3–24a - (b) Figure P3–24b **Figure P3–24a:** The diagram shows a symmetrical lever with an applied force of 30 N at an angle of 70 degrees on both sides of point A. The distances from the point of force application to point A are 0.1 m and 0.3 m. **Figure P3–24b:** Similar to Figure P3-24a, this diagram also depicts forces of 30 N applied at an angle of 70 degrees. The distances from the application points to point A are both 0.2 m. #### Figure P3–25: This figure illustrates a bucket pivoting at point A, with forces acting on it as follows: - A 26 lb force acting vertically downwards at a distance of 12 in from point A - A 10 lb load acting horizontally at a distance of 8 in from point A - Another load acting horizontally at 15 in **Problem 3–25:** Determine the moment about point A for the given system. ### Explanation of Diagrams and Graphs: **Figure P3–23:** Depicts a composite shape with dimensions and forces applied. The primary goal is to understand the force effects creating a moment about a specific point 'A'. **Figures P3–24a and P3–24b:** These figures focus on levers with forces applied at certain angles and distances from a pivot point. The task is to determine how these forces create a moment about the pivot point. **Figure P3–25:** Similar to the previous figures, this one focuses on calculating the moment produced by various forces acting on a pivoting mechanism (bucket). This educational task measures the comprehension of moments created by applied forces on different structures which is fundamental in mechanics of materials and structural analysis.
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