*5-80. The bent rod is supported at A, B, and C by smooth journal bearings. Determine the magnitude of F₂ which will cause the reaction C, at the bearing C to be equal to zero. The bearings are in proper alignment and exert only force reactions on the rod. Set F₁ = 300 lb. 1 ft 4 ft B -2 ft-3 ft- F₁ 5 ft 30°

Elements Of Electromagnetics
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Can you go step-by-step explaining the moments eqautiions and equilibrium equations. Thank, you!!!

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### Problem Statement

**5–80.** The bent rod is supported at points A, B, and C by smooth journal bearings. Determine the magnitude of force \( F_2 \) which will cause the reaction \( C_y \) at bearing C to be equal to zero. The bearings are in proper alignment and exert only force reactions on the rod. Given \( F_1 = 300 \) lb.

### Diagram Explanation

The diagram depicts a bent rod supported by three smooth journal bearings located at points A, B, and C. The figure illustrates a 3D coordinate system with the following details:

- **Rod Orientation and Dimensions:**
  - At point A, the rod is vertical and descends by 4 feet before bending horizontally for 2 feet towards point B.
  - From point B, the rod extends horizontally for another 3 feet until it bends again and ascends diagonally towards point C, located 5 feet along the z-axis and 5 feet along the y-axis from B.

- **Forces Applied:**
  - A force \( F_1 \) of 300 pounds is applied at an angle of 45 degrees towards the negative y-axis and negative z-axis directions at point A.
  - Another force \( F_2 \) is applied at an angle of 30 degrees from the vertical downwards and 45 degrees towards the negative y-axis direction from point C.

- **Coordinate System:**
  - The coordinate system consists of x, y, and z axes to define the rod's position in space. 
  - Lengths on each axis are designated: 1 ft on the x-axis, 4 ft on the vertical z-axis from point A, 2 ft and 3 ft horizontally between A and B, and 5 ft along the y and z axes from point B to C.

- **Bearings' Reaction Forces:**
  - The bearings at points A, B, and C are assumed to exert only force reactions without any moments acting on the rod.
  
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### Analysis and Calculation

To determine the magnitude of \( F_2 \) which causes the reaction \( C_y \) at bearing C to be zero, we need to apply principles from statics, such as the equilibrium of forces and moments. The critical steps involve:

1. **Free-Body Diagram (FBD):** Drawing the FBD of each segment of the rod to visualize all force interactions
Transcribed Image Text:--- ### Problem Statement **5–80.** The bent rod is supported at points A, B, and C by smooth journal bearings. Determine the magnitude of force \( F_2 \) which will cause the reaction \( C_y \) at bearing C to be equal to zero. The bearings are in proper alignment and exert only force reactions on the rod. Given \( F_1 = 300 \) lb. ### Diagram Explanation The diagram depicts a bent rod supported by three smooth journal bearings located at points A, B, and C. The figure illustrates a 3D coordinate system with the following details: - **Rod Orientation and Dimensions:** - At point A, the rod is vertical and descends by 4 feet before bending horizontally for 2 feet towards point B. - From point B, the rod extends horizontally for another 3 feet until it bends again and ascends diagonally towards point C, located 5 feet along the z-axis and 5 feet along the y-axis from B. - **Forces Applied:** - A force \( F_1 \) of 300 pounds is applied at an angle of 45 degrees towards the negative y-axis and negative z-axis directions at point A. - Another force \( F_2 \) is applied at an angle of 30 degrees from the vertical downwards and 45 degrees towards the negative y-axis direction from point C. - **Coordinate System:** - The coordinate system consists of x, y, and z axes to define the rod's position in space. - Lengths on each axis are designated: 1 ft on the x-axis, 4 ft on the vertical z-axis from point A, 2 ft and 3 ft horizontally between A and B, and 5 ft along the y and z axes from point B to C. - **Bearings' Reaction Forces:** - The bearings at points A, B, and C are assumed to exert only force reactions without any moments acting on the rod. --- ### Analysis and Calculation To determine the magnitude of \( F_2 \) which causes the reaction \( C_y \) at bearing C to be zero, we need to apply principles from statics, such as the equilibrium of forces and moments. The critical steps involve: 1. **Free-Body Diagram (FBD):** Drawing the FBD of each segment of the rod to visualize all force interactions
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