A short bar magnet placed with its axis at \( 30^{\circ} \) with P ...

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A short bar magnet placed with its axis at \( 30^{\circ} \) with
P uniform magnetic field of \( 0.16 \mathrm{~T} \), experiences a

W torque of magnitude 0.032 N.m. The potential energy of bar magnet in stable equilibrium and in unstable equilibrium respectively:
(1) \( -0.064 \mathrm{~J},+0.064 \mathrm{~J} \)
(2) \( -0.032 \mathrm{~J},+0.032 \mathrm{~J} \)
(3) \( -0.016 \mathrm{~J},+0.016 \mathrm{~J} \)
(4) Zero, zero
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