5. A small bar magnet P is moving with a constant velocity v towards a öxed conducting ring of radius a along its axis as shown in the figure. Electrical resistance of the ring is R and its self-inductance is vanishingly small. The bar magnet can be modelled as magnetic dipole of dipole moment m. Find force of interaction between the bar magnet and the ring. Ans: g Mota4 mx? CRepultive)

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Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!