ch32-p050 - 50. From Eq. 29-37 (see also Eq. 29-36) we...

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50. From Eq. 29-37 (see also Eq. 29-36) we write the torque as τ = −µ B h sin θ where the minus indicates that the torque opposes the angular displacement θ (which we will assume is small and in radians). The small angle approximation leads to h B µθ ≈− , which is an indicator for simple harmonic motion (see section 16-5, especially Eq. 16-22). Comparing with Eq. 16-23, we then find the period of oscillation
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