Question

if a copper disc swings between the poles of a magnet, the pendulum comes to rest very quickly. Explain the reason what happens to the mechanical energy of the pendulum​

Answer 1

Answer:

As the copper plates oscillate in the magnetic field between the two poles of the magnet, there is a continuous change of magnetic field, flux linked with the pendulum. Due to this eddy currents are set up in the copper plate which try to oppose the motion of the pendulum according to the Lenz's laws and finally bring it to rest.

Answer 2

Answer:

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Explanation:

As the copper disc oscillate in the magnetic field between the two poles of the magnet, there is a continuous change of magnetic field, flux linked with the pendulum. Due to this eddy currents are set up in the copper plate which try to oppose the motion of the pendulum according to the Lenz's laws and finally bring it to rest.