Three masses 3, 4 and 5 kg are placed at the centre of an equiliteral triangle of 1 m sides. Locate its centre of mass.

Explanation

To locate the center of mass of the three masses (3 kg, 4 kg, and 5 kg) placed at the vertices of an equilateral triangle with side length of 1 meter, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Coordinates of the Masses:**
- Place the triangle in a coordinate system. Let the vertices of the equilateral triangle be:
- Mass M1 (3 kg) at A (0, 0)
- Mass M2 (4 kg) at B (1, 0)
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