1 / 14

140 likes | 413 Vues

Does Zero Gravity Exist? If so, what is it?. Gravity holds many objects together in orbits. Moons…. …more moons…. …satellites…. …comets…. Comet Neat. …more comets…. Comet Maccholz. …and astronauts and their space shuttles. But wait….

Télécharger la présentation
## Does Zero Gravity Exist? If so, what is it?

**An Image/Link below is provided (as is) to download presentation**
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.
Content is provided to you AS IS for your information and personal use only.
Download presentation by click this link.
While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

**…more moons…**…satellites…**…comets…**Comet Neat**…more comets…**Comet Maccholz**Why do astronauts in orbit seem to float? Have they escaped**Earth's gravity?**Calculate the force of gravity on a person on Earth. You can**use your own mass. Then calculate the force of gravity if you were an astronaut in orbit. Shuttles orbit the Earth at around 200 miles (about 322 km) above the ground. Fgrav=G*M1M2/r2 G= 6.67300 × 10-11 N m2/Kg2 MEarth= 5.98*1024 Kg REarth= 6.378 x 106 m**According to your results, does all the floating make sense?**Is the force of gravity on Earth that much different than the one astronauts feel? What is happening here?**The astronauts and their craft are falling. They, AND their**ships are in constant free-fall.**Look at Fgrav=G*M1M2/r2**Gravity is always attractive solar system galaxies EVERYWHERE!**Clusters of galaxies**and gravitational lensing**http://www.nasa.gov/returntoflight/multimedia/RTF_videos_search_agent_archive_1.html**http://www.nasa.gov/returntoflight/multimedia/RTF_videos_search_agent_archive_1.html

More Related