Upload
lynchburg
View
2.382
Download
0
Embed Size (px)
DESCRIPTION
Dr. Eric Goff, professor of Physics at Lynchburg College, discusses the physics of athletics in his presentation entitled "Olympic Dreams That Make Sport of Physics," a keynote address at the 2012 International Sports Engineering Conference July 9-13 at the University of Massachusetts Lowell Inn and Conference Center. Featuring presentations by global sports science experts, the conference took place in the United States for only the second time in its16-year history.
Citation preview
12 July 2012
Second-Grade Science
marbles
_ _ _ _ _ _s m o o t h
Men’s 100-m DashBold Prediction: Winner is Jamaican with an “a”in his first name and an “l” in his last name.
Usain Bolt(1.96 m 6 5)
Asafa Powell(1.91 m 6 3)
Yohan Blake(1.80 m 5 11)
9.58 s (WR)
Women’s 100-m Dash
Carmelita Jeter USA
• Started training with John Smith at age 29.
• Ralph Mann’s video analysis work at CompuSport.
The Washington PostSunday, 12 February 201210.64 s (personal best)
10.49 s (WR – FloJo)
Table Tennis
Wang Hao China
vi 20 m/s (45 mph) vf 14 m/s (32 mph)vT 8.8 m/s (20 mph)
Table Tennis
Wang Hao China
Forehand: DHS Skyline III Blue Sponge
Backhand: Butterfly Sriver topsheet on a Bryce Speed sponge
® Less “spongy” and less tackier to give more control.
® More “spongy” and more tackier to give lots of spin.
New team entry???
Field Hockey
Australia
Argentina
Field Hockey Sticks
Mark McHutchon PhD thesis (University of Sheffield)
Men’s +105-kg Weightlifting (Snatch)
Behdad SalimiIran
m = 214 kg (472 lbs)
h 2.1 m (7 ft)
t 3 s
Eout 4.5 kJ 1 Calorie Eint 4 Calories (25% efficient)
Pout 1.5 kW 2 hp
Men’s Archery
Brady EllisonUSA
• 72 arrows shot during ranking round
• Recurve Bow 85% efficient
• Each shot stores 60 J of energy
• 72 shots @ 25% body efficiency requires 17.3 kJ athlete energy
4 Calories
Ongoing Archery Research
Images courtesy of Robert Donahoe.
Cycling – Women’s Sprint
Victoria PendletonUnited Kingdom
Flying 200-m time trial
10.963 s (Olympic Record)
<v> 18.24 m/s 40.81 mph
Pout 0.77 kW 1 hp ½ PSalimi
Eint 8 Calories
Women’s High Jump
Blanka VlašićCroatia
(1.93 m 6 4 tall)
Personal Best:2.08 m (6 10)
World Record:2.09 m (6 10)
Stefka Kostadinova(1987)
• ½% increase in gravitational potential energy• ½% increase in vertical launch speed
Men’s High Jump
Jesse WilliamsUSA
(1.84 m 6 ½ tall)
Personal Best:2.37 m (7 9¼)
World Record:2.45 m (8 00)
Javier Sotomayor(1983)
• Greater acceleration makes up for smaller height.• 3%-12% faster on approach than his competitors.• Slightly less lean upon jumping.• See current issue of Outside!
Non-Human Projectiles: Footballs
“Power and spin in the beautiful game,” John Eric Goff, Physics Today, July 2010
14.1 m/s 31.5 mph
The Albert by Adidas
• Tango 12 Series by Adidas• 32 Thermally-Bonded Triangles• Grip Texture• Woven Carcass and New Bladder to Better Hold Air and Keep Out Water
Men Women
My Picks:
Women’s 200-m Backstroke
Missy FranklinUSA
(17 years old!)
Personal Best:2:05.10(2011)
World Record: Kirsty Coventry (Zimbabwe) – 2:04.81
Women’s 200-m Backstroke
The Washington PostSunday, 21 March 2012
TALL! – 6 1.5 (1.87 m)
Big wingspan! – 6 4 (same as height for “normal” people!)
Big hands and feet (size 13)!
The Beauty of Angular Momentum
Men’s Long Jump
Mitchell WattAustralia
Personal Best: 8.44 m(27 8¼)
Arms and legs move to conserve angularmomentum! 1 m (3 ft) added!
Beamonesque effort needed!
World Record: Mike Powell – 8.95 m(29 4)
CORBIS
Women’s 10-m Platform
Chen RuolinChina
FINA Rule: D 8.4.6 In dives with twist, the twisting shall not be manifestly done from the springboard or platform. If the twisting is manifestly done from the springboard or platform, each judge shall deduct ½ to 2 points, according to his opinion.
Throwing arms and bending at waist allow for twists keep angular mom. conserved!
Ilayout 4.3 Ituck 2.3 Ituck 13.6 Itwist
More Neat Diving Physics
• Archimedes helps out with a 5-m (16.4-ft) deep pool!• Don’t expect the movie to run backwards (2nd law of thermodynamics)!
Women’s Gymnastics – Uneven Bars
Viktoria KomovaRussia
Women’s 50-m Rifle Three Positions
Sonja PfeilschifterGermany
• 0.22-caliber (5.6 mm) small-bore, single-loader rifle• Rifling Stability via angular momentum conservation!
How good is an “accurate” shooter?
154.4 mm(6.08)
10.4 mm(0.409)
(43 arc)
(10 arc)
vi 331 m/s (740 mph)vf 302 m/s (676 mph)t 0.16 s
Smashed Ping-PongBall Across Table!
Men’s Discus Throw
Robert HartingGermany
Personal Best:69.43 m(227.8 ft)
World Record: 74.08 m (243.0 ft)Jürgen Schult (1986) – longest-standing men's world record!
Men’s Discus Throw
v0 = 25 m/s ( 56 mph)
Ch. 8
Who are the best scientists?
Scientific Literacy
Miller: “… able to read the Science section in the Tuesday New York Times.”
Science and the Educated American: A Core Component of Liberal Education(AAAS)
Elementary School Science
SCIENCE AND ENGINEERING INDICATORS 2012
Summary of AAPT Sponsored Discussion Group Response to Achieve on the Next Generation Science Standards First DraftMay 31, 2012:
Even teachers with excellent content knowledge will need professional development activities to assist them in implementing the science and engineering practices both in student learning and in student performance assessments.
We can help!
http://en.wikipedia.org/wiki/File:Usain_Bolt_smiling_Berlin_2009.JPG http://www.london2012.com/cycling-track/photos/galleryid=1236390/#victoria-pendleton-great-britain-rides-the-women-sprint
http://upload.wikimedia.org/wikipedia/commons/4/49/Powell_2010-06-04_Bislett_Games_06.jpg http://en.wikipedia.org/wiki/File:Flag_of_the_United_Kingdom.svg
http://upload.wikimedia.org/wikipedia/commons/1/1e/Yohan_Blake_Daegu_2011.jpg http://waynejoseph.files.wordpress.com/2009/08/robert-harting.jpg
http://en.wikipedia.org/wiki/File:Flag_of_Jamaica.svg http://upload.wikimedia.org/wikipedia/commons/a/ac/Bundesarchiv_Bild_183-1988-0626-014%2C_J%C3%BCrgen_Schult.jpg
http://upload.wikimedia.org/wikipedia/commons/d/d4/Carmelita_Jeter_Berlin_2009.jpg http://www.usaswimming.org/_Rainbow/images/_National%20Team%20Swimmers/Franklin1300039722.gif
http://en.wikipedia.org/wiki/File:Flag_of_the_United_States_(Pantone).svg http://www.washingtonpost.com/sports/olympics/missy-franklin-has-body-built-for-speed/2012/02/15/gIQAtHT7RS_story.html
http://bilder.augsburger-allgemeine.de/img/18499571-1327683180000/topTeaser_crop_Sonja-Pfeilschifter-ist-mit-einem-Sieg-in-die-Olympia-Saison-gestartet.-Foto-David-Ebener.jpg
http://www.zimbio.com/pictures/QTO5d4R_2zR/Olympics+Day+15+Athletics/MTV_xa_Lzf_/Blanka+Vlasic
http://en.wikipedia.org/wiki/File:50_meter_rifle_target.svg http://en.wikipedia.org/wiki/File:Flag_of_Croatia.svg
http://images.beijing2008.cn/20071217/Img214217357.JPG http://www.zimbio.com/photos/Jesse+Williams/IAAF+World+Indoor+Championships+Day+Three/GqTksB-WgvQ
http://www.ittf.com/stories/pictures/wang_hao_30_10_10_Large.jpg http://en.wikipedia.org/wiki/File:Flag_of_Russia.svg
http://en.wikipedia.org/wiki/File:Flag_of_the_People%27s_Republic_of_China.svg http://therightwinger.co.za/2012/03/adidas-present-2012-olympic-football%E2%80%99s-official-match-ball-%E2%80%98the-albert%E2%80%99/
http://www.celebritiesplayingtabletennis.com/barack_obama-david_cameron8.jpg http://en.wikipedia.org/wiki/File:Flag_of_Brazil.svg
http://en.wikipedia.org/wiki/File:Flag_of_Germany.svg http://www.zimbio.com/photos/Victoria+Komova/Artistic+Gymnastics+World+Championships+Tokyo/6opzDCwzyLi
http://upload.wikimedia.org/wikipedia/commons/1/19/Las_Leonas_2008_%28completo%29.jpg http://www.zimbio.com/pictures/Tk1852lTghw/Artistic+Gymnastics+World+Championships+Tokyo/hUmj3_e2hqA/Victoria+Komova
http://en.wikipedia.org/wiki/File:2008_Olympic_field_hockey_team_Australia.JPG http://imgsrc.hubblesite.org/hu/db/images/hs-2007-41-a-web.jpg
http://www.sportsauthority.com/largeImage/index.jsp?LargeImageURL=http%3A//TSA.imageg.net/graphics/product_images/p1006033dt.jpg
http://www.hzdr.de/FWK/MITARB/rs/quantrot.gif
http://en.wikipedia.org/wiki/File:Flag_of_Argentina.svg http://www.iaaf.org/mm/Photo/06/10/15/61015_FULL-PRT.jpg
http://www.youtube.com/watch?v=0HduJeMruRQ http://img10.beijing2008.cn/20080821/Img214571933.jpg
http://upload.wikimedia.org/wikipedia/commons/c/ca/Flag_of_Iran.svg http://i.eurosport.com/2011/07/18/741731-9290651-640-360.jpg
http://matchstic.com/blog/wp-content/uploads/2011/03/diet-coke.jpghttp://upload.wikimedia.org/wikipedia/commons/2/2c/NN-K125MBGPG_Grill-Mikrowelle_silber_Panasonic.gif
http://en.wikipedia.org/wiki/File:The_Sun_by_the_Atmospheric_Imaging_Assembly_of_NASA%27s_Solar_Dynamics_Observatory_-_20100819.jpg
http://upload.wikimedia.org/wikipedia/commons/0/0e/Ellison2010.jpg
Photo Credits
Thanks So Much!
More from me: Gold Medal Physics: The Science of Sports
Questions and/or comments???