Why do fridge magnets hold their own weight and more without a power source?

Question

Everything that does work must have a power source. Magnets certainly do perform work, but science cannot explain a power source for them.

Answer 1

work = force x distance

power = work / time

A magnet sticking to a refrigerator is not moving and so is doing no work. Hence, no power is required. In the same way, when a heavy block is sitting on a table, the table exerts a force but since the block isn't moving, the table doesn't need a power source.

As for why the refrigerator magnet doesn't just slide down under the influence of gravity, the answer is friction - in particular, the coefficient of static friction.

http://hyperphysics.phy-astr.gsu.edu/hba...