- Use the formula \( I = \frac{1}{2} m r^2 \).
- Given: \( m = 4 \, \text{kg} \), \( r = 0.3 \, \text{m} \).
- Substitute the values: \( I = \frac{1}{2} \times 4 \times (0.3)^2 \).
- Calculate: \( I = \frac{1}{2} \times 4 \times 0.09 = 0.18 \, \text{kg} \cdot
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