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kkngs t1_j8l4jhj wrote on February 15, 2023 at 2:34 AM

Reply to comment by DamionFury in Light traveling through a medium that slows it. Does the same photon emerge? by TheGandPTurtle

If the object is just being suspended by the permanent magnet, being held still against the force of gravity, then no work is being done. It’s not conceptually different than being held up by a shelf.