Upcoming SlideShare
×

# Resonance presentation

2,397 views

Published on

0 Likes
Statistics
Notes
• Full Name
Comment goes here.

Are you sure you want to Yes No
• Be the first to comment

• Be the first to like this

Views
Total views
2,397
On SlideShare
0
From Embeds
0
Number of Embeds
10
Actions
Shares
0
174
0
Likes
0
Embeds 0
No embeds

No notes for slide

### Resonance presentation

1. 1. ts ep onc d C ne rk site a i pe m p u e p le S q c y - re n ha ob M e na s lly pr- r o le P es p ea he R t - R a m hat to - E x W ns - o utio d S l - o En S e - T h -
2. 2. What You need to Know Energy o Kinetic Energy o Potential Energy Amplitude Frequency
3. 3. Resonance- Resonance is defined as the tendency of an object to oscillate or vibrate at greater amplitudes when another sources emits a frequency of the object- To explain it in clearer terms we take the example of a child on a swing
4. 4. Mismatched FrequencyWhat happens when the emittedfrequency is lower?What happens when it’s higher?
5. 5. Mismatched FrequencyWhat happens when the emittedfrequency is lower?What happens when it’s higher?
6. 6. - Mechanical Resonance is a type of resonance that deals with mechanical systems.- A mechanical system is taken to mean a physical object.- Bridges and other large structures are the perfect examples to demonstrate Mechanical resonance.
7. 7. Nimitz Freeway Collapse- A bridge that was located in San Francisco, California- Collapsed in 1989- The reason for collapse was an earthquake that struck the city.
8. 8. Soldiers on Bridge- Great story my teacher always used to bring up in high school.- Now soldiers don’t march in step while crossing a bridge
9. 9. So why did it collapse?  One theory is that  Another theory is it collapsed due that it collapsed to forced due to self- resonance excitation (aero- elastic flutter)
10. 10. The problem was with the design of the bridgeThe bridge was closed from the sides, thus blocking the air from passing throughEngineers were able to figure this out and so it was decided that when building bridges, the sides would be kept open
11. 11. Works Cited  Webdev17 (2009, March 2). Tacoma-Narrows Bridge construction & Collapse 1940 4 min. Retrieved December 2, 2012. From: http://www.youtube.com/watch?v=6AlSZT9k1ww GonzoNugent (2006, September 28). Tacoma Narrows Bridge Collapse “Gallopin Gertie”. Retrieved December 2, 2012From: http://www.youtube.com/watch?v=j-zczJXSxnw Crowell Benjamin (2012). Light and Matter. n.d. n.d.pg 443-456. Retrieved from http://www.lightandmatter.com/lm.pdf. Accessed on December 2, 2012. ( Statistical data concerning Tacoma Narrows and Nimitz freeway was obtained from this source) K. Billah and R. Scanlan (1991).  "Resonance, Tacoma Narrows Bridge Failure, and Undergraduate Physic Textbooks"  (PDF). American Journal of Physics 59 (2): 118 124. http://www.ketchum.org/billah/Billah-Scanlan.pdf Retrieved December 2, 2012. (Statistical data concerning Tacoma Narrows was obtained from this source)  "Shattering wine glass." University of Salford Manchester. N.p., n.d. Web. 2 Dec. 2012. Retreived from http://www.acoustics.salford.ac.uk/feschools/waves/wine1video.htm
12. 12. Works Cited  "0.jpg." article.wn.com. N.p., n.d. Web. 2 Dec. 2012. <i.ytimg.com/vi/d6V2YAkyEdg/0.jpg>. "Amplitude." math.ubc.ca. N.p., n.d. Web. 2 Dec. 2012. www.math.ubc.ca /~cass/courses/m309-03a/a1/pcheng/Amplitude.jpg. "Frequency." qrg.northwestern.edu. N.p., n.d. Web. 2 Dec. 2012. www.qrg.northwestern.edu/projects/vss/docs/media/Communications/freq uency.gif. "Nimitz_cypress_Structure."returntothe80s.wordpress.com. N.p., n.d. Web. 2 Dec. 2012. www.vias.org/physics/img/nimitz_Cypress_structure.jpg. "Potential-and-kinetic." Petervaldivia. N.p., n.d. Web. 2 Dec. 2012. www.petervaldivia.com/technology/energy/image/potencial-and- kinetic.bmp. "Tacoma Narrows Bridge (1940)."Wikipedia. N.p., n.d. Web. 2 Dec. 2012. <en.wikipedia.org/wiki/File:Image-Tacoma_Narrows_Bridge1.gif>. "mum-girl-swing." oliverhume.com.au. N.p., n.d. Web. 2 Dec. 2012. <www.oliverhume.com.au/assets/mum-girl-swing.jpg>.
13. 13. Thanks for Watching!