Hi, I am curious about the most efficient method of levitating an object. I am considering using electromagnetic induction or the repulsion between a magnet and electromagnet. Which would require less energy? Also I am aware of Earnshaw's law; let's ignore the complexities it causes for now. Also, is it possible to produce a repulsive force through induction, if the electromagnet is not moving in relation to the conductor? Say, if the electromagnet and the conductor are fixed in spot, but the electromagnet has an alternating magnetic field. Any help would be appreciated.