Professor John Goree & Lou Datilio Gravity Weight Falling in Space: Microgravity (Weightlessness)

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Presentation transcript:

Professor John Goree & Lou Datilio Gravity Weight Falling in Space: Microgravity (Weightlessness)

Q. What keeps you from floating out of your chair, when you are seated? A. Gravity

Q. Why does everything dropped (here, the apples) fall downward? A. Gravity All things attract one another

Pictures taken (at regular intervals) of a ball falling Falling

All objects fall at the same speed (without air resistance) Falling

Demonstration: quarter and feather

Throwing a ball at different speeds Falling

Throwing it hard enough might make it go into orbit around the earth Falling

Demonstration: Java applet (Fowler’s Physics Applets)

Weight

Demonstration: weight on a bathroom scale

Weight and Weightlessness inside an elevator Weight

Weightlessness: inside a falling elevator in a spacecraft, They are alike, because both are falling

Video: free fall

astronauts inside their spacecraft Weightlessness

Space Station months Space shuttle <17 days Sounding rockets10 min KC sec Drop towers 5 sec Vomit Comet “Microgravity” = “Weightlessness” Weightlessness

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Spacecraft: Mir Space Station Mir: Spring, 2000

International Space Station “ISS”

ISS - Assembly Sequence

International Space Station

Space Shuttle

Video - Space Shuttle launch

Demonstration cars Video Astronauts in Space Shuttle

Demonstration: basketball Video: basketball in space

Microgravity projects at the Univ. of Iowa Physics Dept.

PKE - Plasmakristall Experiment Germany, Russia, U.S Parabolic flight tests ISS Dec launch the 1 st physical sciences experiment on ISS PKE flight hardware with 1st & 3rd ISS crews

PKE accommodation Zvezda (Russian Service Module) ISS - assembly 1R July 25, 2000

Inside Zvezda

PKE logo

Launched: on Russian Progress rocket from Baikonur, Kazakhstan March, 2001 Will be done: end of 2001 hardware will go through destructive re-entry PKE

Demonstration: Screen up Water balloon