Magnetic Dipole - Forces Between Two Magnetic Dipoles

Forces Between Two Magnetic Dipoles

See also: Force between magnets#Magnetic dipole-dipole interaction

The force F exerted by one dipole moment m1 on another m2 separated in space by a vector r can be calculated using

or

\mathbf{F}(\mathbf{r}, \mathbf{m}_1, \mathbf{m}_2) = \dfrac{3 \mu_0}{4 \pi r^5}\left,

where r is the distance between dipoles. The force acting on m1 is in the opposite direction.

The torque can be obtained from the formula

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