Q.4) Determine the maximum allowable weight of the drum for the system shown below if the system is to be in equilibrium. The block weighs 60 lb and the coefficient of static friction for all surfaces is 0.4 7" 4" 25 13" 18"

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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**Q.4) Determine the maximum allowable weight of the drum for the system shown below if the system is to be in equilibrium. The block weighs 60 lb and the coefficient of static friction for all surfaces is 0.4**

**Description of Diagram:**

- The system consists of a rectangular block and a drum connected by a rod and placed on an inclined plane. 
- The rectangular block has the following dimensions: height = 18 inches and width = 9 inches.
- The drum has a diameter of 8 inches (radius = 4 inches, as it is given as 4 inches in the diagram from the drum's center to its edge).
- The rod is connected to the center of the drum and to a point on the rectangular block 4 inches above its bottom.
- The inclined plane is inclined at an angle of 25° to the horizontal.

**Detailed Annotations on Diagram Measurements:**

- The entire length from the point where the rectangular block touches the inclined plane to the base of the drum is 13 inches.
- The rod connecting the drum and block is horizontal and is of length 4 inches.
- The center of the drum is 7 inches vertically from the inclined plane.
- The rectangular block's bottom edge is in contact with the inclined plane.

**Key Parameters for Calculations:**

- Weight of the block: 60 lb
- Coefficient of static friction: 0.4

Use these given measurements and parameters to calculate the maximum allowable weight of the drum such that the system remains in equilibrium. 

For the educational context, students are expected to use principles of static equilibrium, taking into account forces parallel and perpendicular to the inclined plane, frictional forces, and the moments affecting the system.
Transcribed Image Text:**Q.4) Determine the maximum allowable weight of the drum for the system shown below if the system is to be in equilibrium. The block weighs 60 lb and the coefficient of static friction for all surfaces is 0.4** **Description of Diagram:** - The system consists of a rectangular block and a drum connected by a rod and placed on an inclined plane. - The rectangular block has the following dimensions: height = 18 inches and width = 9 inches. - The drum has a diameter of 8 inches (radius = 4 inches, as it is given as 4 inches in the diagram from the drum's center to its edge). - The rod is connected to the center of the drum and to a point on the rectangular block 4 inches above its bottom. - The inclined plane is inclined at an angle of 25° to the horizontal. **Detailed Annotations on Diagram Measurements:** - The entire length from the point where the rectangular block touches the inclined plane to the base of the drum is 13 inches. - The rod connecting the drum and block is horizontal and is of length 4 inches. - The center of the drum is 7 inches vertically from the inclined plane. - The rectangular block's bottom edge is in contact with the inclined plane. **Key Parameters for Calculations:** - Weight of the block: 60 lb - Coefficient of static friction: 0.4 Use these given measurements and parameters to calculate the maximum allowable weight of the drum such that the system remains in equilibrium. For the educational context, students are expected to use principles of static equilibrium, taking into account forces parallel and perpendicular to the inclined plane, frictional forces, and the moments affecting the system.
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