3. Find the centroid of the area shown to the right. Ans: =-0.241 in, %3D y =-2.58 in. %3D

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Use coordinate system provided in the question.

**Finding the Centroid of a Composite Area**

**Problem Statement:**
3. Find the centroid of the area shown to the right.

**Solution:**
\[
\bar{x} = -0.241 \text{ in},
\]
\[
\bar{y} = -2.58 \text{ in}.
\]

**Diagram Explanation:**

The diagram depicts a composite area consisting of several geometric shapes:

1. **Rectangle Base:** 

   - Dimensions: 20 inches wide (10 inches + 10 inches) and 10 inches tall.

2. **Triangle (left side):**

   - Height: 9 inches
   - Base: 6 inches

3. **Semicircle (right side):**

   - Radius: 6 inches

4. **Circle (cutout near bottom right):**

   - Radius: 2 inches
   - Positioned 4 inches from the right side of the rectangle and 4 inches from the bottom side

**Axes:**
- The diagram displays a coordinate system with \( x \) and \( y \) axes. The origin is located at the bottom of the rectangle.

To find the centroid \((\bar{x}, \bar{y})\), we use geometric decomposition and centroid formulas, which involve balancing the composite shapes' areas around the axes to find the center of mass.
Transcribed Image Text:**Finding the Centroid of a Composite Area** **Problem Statement:** 3. Find the centroid of the area shown to the right. **Solution:** \[ \bar{x} = -0.241 \text{ in}, \] \[ \bar{y} = -2.58 \text{ in}. \] **Diagram Explanation:** The diagram depicts a composite area consisting of several geometric shapes: 1. **Rectangle Base:** - Dimensions: 20 inches wide (10 inches + 10 inches) and 10 inches tall. 2. **Triangle (left side):** - Height: 9 inches - Base: 6 inches 3. **Semicircle (right side):** - Radius: 6 inches 4. **Circle (cutout near bottom right):** - Radius: 2 inches - Positioned 4 inches from the right side of the rectangle and 4 inches from the bottom side **Axes:** - The diagram displays a coordinate system with \( x \) and \( y \) axes. The origin is located at the bottom of the rectangle. To find the centroid \((\bar{x}, \bar{y})\), we use geometric decomposition and centroid formulas, which involve balancing the composite shapes' areas around the axes to find the center of mass.
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