A loud noise is produced when a vibrating tuning fork is placed on a table because of 

A loud noise is produced when a vibrating tuning fork is placed on a table because of forced vibrations 

A loud noise is produced when a vibrating tuning fork is placed on a table because the entire system starts to vibrate, which causes the air around it to start vibrating. Forced vibration is the tendency of one object to cause the motion of another object that is adjacent to it or connected to it.