system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why are lawn mowers so loud? The engine is a third the size of a car's but makes three times as much noise?
gpt
Internal combustion engines are actually extremely loud. Cars have complicated exhaust systems with mufflers that absorb sound waves and dampen the sound of the engine. Lawnmower engines don't have mufflers so all the vibrations that it produces get transfered directly into your earholes.