Question

Two bar magnets are placed close to each other with their opposite poles facing each other. In absence of other forces, the magnets are pulled towards each other and their kinetic energy increases. Does it contradict our earlier knowledge that magnetic forces cannot do any work and hence cannot increase kinetic energy of a system?

Answer 1

Yes, This contradicts our previous knowledge that magnetic forces can not do any work and therefore can not increase the system's kinetic energy.

Explanation:

• As opposite poles face each other, an enticing force acts between them and thereby pulling the magnets towards each other.

• The kinetic energy also increases as the two magnets come close to each other so that the force between them increases and thus.