logging in or signing up abrikosov Panfilo Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 374 Category: Sports License: All Rights Reserved Like it (0) Dislike it (0) Added: April 30, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Slide1: Winter Alpine Physics Alexey Abrikosov, jr. Institute of Theoretical and Experimental Physics, Moscow, Russia Andrei Varlamov COHERENTIA, CNR-INFM, Rome, Italy Speed scales: 0 50 100 150 200 250 km/h Speed scalesSpeed skiing: Monte Rosa glacier under Matterhorn; Maximum gradient — 62° Speed skiingSpeed skiing tracks: Speed skiing tracksFree Fall: Free fall from 1000 m Free FallWind tunnel: Wind tunnelPhysical factors in speed skiing: Gravity and angle Air drag Friction Physical factors in speed skiingBobsleigh & Luge: The sport of bobsleigh began at the end of 19th century when the Swiss attached a steering mechanism to a toboggan. In 1897, the world's first bobsleigh club was founded in St. Moritz, Switzerland. Eugenio Monti (Italy) won 11 world championships (1957–1968 ); Bobsleigh & LugeTrack and speed: Track and speedAddends of victory : Addends of victory Push Ride Win! Centripetal versus centrifugal: Centripetal versus centrifugalPhysical factors in bobsleigh: Initial impulse Gravity Air drag Friction Optimal trajectory Physical factors in bobsleighSlide14: Luge speed record 139.4 km/h Tony BenshoofThe problem of optimal trajectory: The problem of optimal trajectory What is the fastest way from A to B? Is the straight way faster? Brachistochrone: Brachistochrone What is the path of quickest descent from A to B? The minimal time problem Other minimum principles: Other minimum principles Brachistochrone — minimal time problemCycloid: Cycloid Johann Bernoulli, 1697 Alpine Skiing: Alpine SkiingSpecial Slalom: Special SlalomHistory of skiing: History of skiing Cave drawing from Eastern Russia. (between 7000 and 5000 B.C.) Telemark skis.: Telemark skis. New skis were shorter (about 2 m 40 cm) than other skis used at that time. Sondre Norheim (Telemark County, Norway, XIX century)Fridtjof Nansen: Fridtjof Nansen Norwegian arctic explorer, zoologist and statesman; Nobel Peace Prize 1922. 12 times national champion in skiing; World record for one-mile skating. 1890 — book On Skis Over Greenland The first to cross the mid-Greenland ice cap on skis (1888). Nansen Gallery: Nansen GalleryTelemark turn: Telemark turnBasics of alpine skiing: Basics of alpine skiingSki robots: Ski robots Skidding: Skidding Work against friction A is proportional to swept area SCarving revolution of 1990-ies: Carving revolution of 1990-iesOptimal trajectory: Optimal trajectoryWith and without friction: With and without frictionSwing and parametric resonace: Swing and parametric resonaceCarving and acceleration: Carving and accelerationCenter of mass in motion : Center of mass in motion Cross-country versus Alpine: Cross-country versus Alpine Cross country AlpineAcceleration: AccelerationWhat it looks like: What it looks like Ivica Kostelic, World Champion in slalom, 2003 Altitude loss and speed gain: Altitude loss and speed gainSpeed control : Speed control Passive — skidding and carving; Active — flexion–extension.Energy pumping: Energy pumping –Physical factors in alpine skiing: Physical factors in alpine skiing Gravity Air drag (downhill, GS, SuperG) Friction (skidding and carving) Optimal trajectory (slalom) Flexion-extension (slalom, GS)Gallery of Alpine Glory - I: Gallery of Alpine Glory - IGallery of Alpine Glory - II: Gallery of Alpine Glory - IIGallery of Alpine Glory - III: Gallery of Alpine Glory - IIIAcknowledgements: Acknowledgements Yuriy PreobrajenskiySlide46: Skiing is not the bliss but a perfect substitute You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.
abrikosov Panfilo Download Post to : URL : Related Presentations : Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Uploaded from authorPOINTLite Insert YouTube videos in PowerPont slides with aS Desktop Copy embed code: (To copy code, click on the text box) Embed: URL: Thumbnail: WordPress Embed Customize Embed The presentation is successfully added In Your Favorites. Views: 374 Category: Sports License: All Rights Reserved Like it (0) Dislike it (0) Added: April 30, 2008 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript Slide1: Winter Alpine Physics Alexey Abrikosov, jr. Institute of Theoretical and Experimental Physics, Moscow, Russia Andrei Varlamov COHERENTIA, CNR-INFM, Rome, Italy Speed scales: 0 50 100 150 200 250 km/h Speed scalesSpeed skiing: Monte Rosa glacier under Matterhorn; Maximum gradient — 62° Speed skiingSpeed skiing tracks: Speed skiing tracksFree Fall: Free fall from 1000 m Free FallWind tunnel: Wind tunnelPhysical factors in speed skiing: Gravity and angle Air drag Friction Physical factors in speed skiingBobsleigh & Luge: The sport of bobsleigh began at the end of 19th century when the Swiss attached a steering mechanism to a toboggan. In 1897, the world's first bobsleigh club was founded in St. Moritz, Switzerland. Eugenio Monti (Italy) won 11 world championships (1957–1968 ); Bobsleigh & LugeTrack and speed: Track and speedAddends of victory : Addends of victory Push Ride Win! Centripetal versus centrifugal: Centripetal versus centrifugalPhysical factors in bobsleigh: Initial impulse Gravity Air drag Friction Optimal trajectory Physical factors in bobsleighSlide14: Luge speed record 139.4 km/h Tony BenshoofThe problem of optimal trajectory: The problem of optimal trajectory What is the fastest way from A to B? Is the straight way faster? Brachistochrone: Brachistochrone What is the path of quickest descent from A to B? The minimal time problem Other minimum principles: Other minimum principles Brachistochrone — minimal time problemCycloid: Cycloid Johann Bernoulli, 1697 Alpine Skiing: Alpine SkiingSpecial Slalom: Special SlalomHistory of skiing: History of skiing Cave drawing from Eastern Russia. (between 7000 and 5000 B.C.) Telemark skis.: Telemark skis. New skis were shorter (about 2 m 40 cm) than other skis used at that time. Sondre Norheim (Telemark County, Norway, XIX century)Fridtjof Nansen: Fridtjof Nansen Norwegian arctic explorer, zoologist and statesman; Nobel Peace Prize 1922. 12 times national champion in skiing; World record for one-mile skating. 1890 — book On Skis Over Greenland The first to cross the mid-Greenland ice cap on skis (1888). Nansen Gallery: Nansen GalleryTelemark turn: Telemark turnBasics of alpine skiing: Basics of alpine skiingSki robots: Ski robots Skidding: Skidding Work against friction A is proportional to swept area SCarving revolution of 1990-ies: Carving revolution of 1990-iesOptimal trajectory: Optimal trajectoryWith and without friction: With and without frictionSwing and parametric resonace: Swing and parametric resonaceCarving and acceleration: Carving and accelerationCenter of mass in motion : Center of mass in motion Cross-country versus Alpine: Cross-country versus Alpine Cross country AlpineAcceleration: AccelerationWhat it looks like: What it looks like Ivica Kostelic, World Champion in slalom, 2003 Altitude loss and speed gain: Altitude loss and speed gainSpeed control : Speed control Passive — skidding and carving; Active — flexion–extension.Energy pumping: Energy pumping –Physical factors in alpine skiing: Physical factors in alpine skiing Gravity Air drag (downhill, GS, SuperG) Friction (skidding and carving) Optimal trajectory (slalom) Flexion-extension (slalom, GS)Gallery of Alpine Glory - I: Gallery of Alpine Glory - IGallery of Alpine Glory - II: Gallery of Alpine Glory - IIGallery of Alpine Glory - III: Gallery of Alpine Glory - IIIAcknowledgements: Acknowledgements Yuriy PreobrajenskiySlide46: Skiing is not the bliss but a perfect substitute