PHYSICAClass 12 Physics simulations · Magnetism and Matter
Oscillating magnet in Earth’s field
Suspend a bar magnet horizontally. Displace it and time its oscillations about the magnetic meridian.
What to notice
A stronger magnet or a stronger field gives faster oscillations.
Key relation
T = 2π √(I / mB)
Try this
Quadruple the magnetic moment. What happens to the period?
What you can change
- Magnetic moment m: 0.5 to 5 A m²
- Moment of inertia: 1 to 20 × 10⁻⁵ kg m²
- Horizontal field B_H: 10 to 60 μT
- Initial angle: 5 to 30 °
More in Magnetism and Matter
- Paramagnetism and Curie’s law
- Magnetic dipole: axis and equator
- Earth’s magnetic field components
- Bar magnet and compass
- How magnetic materials respond
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