Mass center of a system of a segment of a uniform circular rod(arc)
Find location of mass center of a thin uniform rod bent into shape of an arc.

Explanation

To find the location of the center of mass of a thin uniform rod bent into the shape of an arc, we can follow these steps:

### Step-by-Step Solution:

1. **Define the Geometry of the Arc**:
- Let the radius of the arc be \( r \).
- The arc subtends an angle of \( 2\theta \) at the center of the circle.

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