Olympic Dreams That Make Sport of Physics

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???