A bar magnet with poles 25 cm apart and ...

A bar magnet with poles 25 cm apart and of strength 14.4 amp - m rests with centre on a frictionless pivot. It is held in equilibrium aat an angle of `60^@ `with respect to a uniform magnetic field of induction `0.25 Wb//m^(2) `, by applying a force F at right angles to its axis at a point 10 cm from pivot. Calculate F.

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