A uniform metre scale can be balanced at the 70.0 cm mark when a mass of 0.05 kg is hung from the 94.0 cm mark.
Find the mass of the metre scale.

Explanation

To solve the problem, we will use the principle of moments, which states that for an object in equilibrium, the clockwise moments about a pivot point are equal to the counterclockwise moments.

### Step-by-Step Solution:

1. **Identify the pivot point**: The meter scale is balanced at the 70.0 cm mark. This is our pivot point.

2. **Determine the center of gravity of the meter scale**: Since the meter scale is uniform, its center of gravity is at the midpoint, which is at the 50.0 cm mark.

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