Given:
- Acceleration \( a = 4.56 \, \text{m/s}^2 \)
- Displacement \( x = 0.4 \, \text{mm} = 0.0004 \, \text{m} \)
The formula for acceleration in SHM is:
\[ a = -\omega^2 x \]
Rearrange to find \( \omega \):
\[ \omega^2 = \frac{a}{x} = \frac{4.56}{0.0004}
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