MIT Vibrations and Waves Problem Solving Help Videos, Fall 2012 - 7. Standing Waves Part II

View the complete OCW resource: http://ocw.mit.edu/resources/res-8-005-vibrations-and-waves-problem-solving-fall-2012/ Instructor: Wit Busza In this session, we do more standing wave problems. The focus is on the role of boundary conditions at the intersection of two continuous media with different physical characteristics. *NOTE: These videos were originally produced as part of a physics course that is no longer available on OCW.* Chapters 0:00:00 Title slate 0:00:33 First problem: 2 equal length strings with 2 different masses. What are the two lowest modes of vibration. 0:15:36 Calculation of the normal modes of vibration of the air in a room. It is a standing wave problem in 3D. 0:18:14 A problem similar to the above, but this time the strings are replaced by rods which vibrate longitudinally and different boundary conditions are chosen. 0:19:04 The taut string fixed at both ends from the previous session is now replaced by two connected strings, each with a very different density. The lowest two normal modes are found by inspection. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu