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Professor John Goree & Lou Datilio

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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.

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Presentation Transcript
slide1

Professor John Goree & Lou Datilio

  • Gravity
  • Weight
  • Falling
  • in Space: Microgravity (Weightlessness)
slide3

Q. Why does everything dropped (here, the apples) fall downward?

A. Gravity

All things attract one another

slide4

Falling

Pictures taken (at regular intervals) of a ball falling

slide5

Falling

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

slide7

Falling

Throwing a ball at different speeds

slide8

Falling

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

slide9

Demonstration:

Java applet

www.physics.uiowa.edu/~stille/

(Fowler’s Physics Applets)

slide11

Demonstration:

weight on a bathroom scale

slide12

Weight

Weight and Weightlessness inside an elevator

slide13

Weightlessness:

  • inside a falling elevator
  • in a spacecraft,

They are alike, because both are falling

slide15

Weightlessness

astronauts inside their spacecraft

microgravity weightlessness

Space Station months

Space shuttle <17 days

Sounding rockets 10 min

KC-135 20 sec

Drop towers 5 sec

Vomit Comet

Weightlessness

“Microgravity” = “Weightlessness”
slide24

Demonstration cars

Video Astronauts in Space Shuttle

slide25

Demonstration: basketball

Video: basketball in space

slide26

Microgravity

projects

at the Univ. of Iowa Physics Dept.

pke plasmakristall experiment

1999 - Parabolic flight tests

  • 2000-01 - ISS
    • Dec. 2000 - launch
    • 2001 - the 1st physical sciences
    • experiment on ISS

PKE flight hardware with 1st & 3rd ISS crews

PKE - Plasmakristall Experiment

Germany, Russia, U.S.

pke accommodation
PKE accommodation

Zvezda

(Russian Service Module)

ISS - assembly 1R

July 25, 2000

slide33

PKE

  • Launched:
    • on Russian Progress rocket
    • from Baikonur, Kazakhstan
    • March, 2001
  • Will be done:
    • end of 2001
    • hardware will go through destructive re-entry
slide34

Demonstration:

Screen up

Water balloon

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