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A bar magnet of magnetic moment 'm'and moment of inerta'I'(about an axis passing through centre of mass and perpendicular to the magnet) is turned through 900 about the axis of suspension, to be at right angle to a uniform magnetic field B and then released. What is the angular velocity of the magnet while passing through the direction of the field ??

Jitender Pal , 10 Years ago
Grade 9
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