Question:

Example 5.13: Two magnets with the same dimensions and mass, but of magnetic moments mu_{1} = 100A * m² and mu_{2} = 50A * m² are jointly suspended in the earth’s magnetic field so as to perform angular oscillations in a horizontal plane. When their like poles are joined together, the period of their angular S.H.M. is 5 s. Find the period of angular S.H.M. when their unlike poles are joined together.