Consider the following, a magnet and a charge is attached to a platform, which is constrained to move only up and down direction. Now, if magnet is moved towards charge, due to changing magnetic field, an electric field will be created. This electric field will impart force on charge. since the magnet and charge are attached on a same platform and platform can move only up and down, magnet will not experience lenz force. But the whole platform will move up ( or down according to electric field direction ). So, we are getting work from system but magnet will not experience lenz force as it will also move with the charge. Will it violate energy conservation ?