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Physics
Physics
Problem
Show that the work done in rotating a magnetic dipole of moment
μ
\mu
μ
from an initial angle
θ
1
\theta_1
θ
1
to a final angle
θ
2
\theta_2
θ
2
with respect to a uniform magnetic field of magnitude
B
B
B
is
W
=
μ
B
(
cos
θ
1
−
cos
θ
2
)
.
W = \mu B\,(\cos \theta_1 - \cos \theta_2).
W
=
μ
B
(
cos
θ
1
−
cos
θ
2
)
.
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