The answer to 'how does garbage disposal work' is that a garbage disposal is an electrical appliance installed under the kitchen sink that grinds up food waste so it can be flushed down the drain. When you turn on the disposal, an electric motor spins metal impellers that quickly grind up any food scraps that are fed into the disposal. This ground-up food waste is then flushed away with water down the drain, preventing it from clogging the pipes.
Garbage disposals have become a common household appliance because they make it easy to get rid of food waste without creating a mess or odor in the kitchen. They are powered by an electric motor that is activated when you flip the switch on the wall. The spinning impellers inside the disposal unit quickly grind up any solid food waste that is pushed into the opening, turning it into a fine slurry that can be easily flushed down the drain with running water.