if vibrating body makes sound so why pendulam do not makes sound?
The sound produced from a vibrating pendulum is of a very low itch and quality. This is why we are not able to hear the sound produced by it.
To produce sound we need a medium means molecules. When sound tries to travels through gas then how it can pass between the gas of molecules? I know that sound makes the object (at molecules molecular level-particles) move ,i.e., they vibrate. But why they vibrate or how they vibrate. If sound can't travel through the gaps. I m talking about only has.