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Three identical bar magnets are riveted together

Question:

Three identical bar magnets are riveted together at the centre in the same plane as shown in the figure. This system is placed at rest in a slowly varying magnetic

field. It is found that the system of magnets does not show any motion. The north-south poles of one magnet is shown in the figure. Determine the poles of the

remaining two.

Solution:

The system will have a net torque and the net force equal to zero as the system is in equilibrium.

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