anonymous
  • anonymous
why does satellite fall back to earth instead of keep orbiting around the earth?
Physics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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UnkleRhaukus
  • UnkleRhaukus
there is a little friction with the gas particles out there
JamesJ
  • JamesJ
Right. Most satellites are in low earth orbit, so the friction is not trivial. http://en.wikipedia.org/wiki/Low_Earth_orbit
anonymous
  • anonymous
It falls back to earth simply because of gravity, still the satellite is near to earth which deal the satellite more gravitational force than any other planet/star nearer to it. The lesser the gap the more gravitational force it will draw or Simply space-time Fabric.

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AravindG
  • AravindG
eashmore r u free?
AravindG
  • AravindG
i hav some doubts
JamesJ
  • JamesJ
@JusticeAlpha, what you're saying isn't quite sufficient. If you had a satellite in perfect uniform circular motion about the earth, then the force of gravity is acting exactly as the centripetal force. If nothing else happened, the satellite would circle the earth for ever. But something else does happen: friction acts. Without that friction (or something else, such as a collision), the satellite would not fall to earth. Hence the force of gravity by itself is a not a sufficient explanation. We need something else.
anonymous
  • anonymous
hehe i gonna ask sumthing silly, is this equation usable: |dw:1327329364967:dw| l = distance between the object from the surface of earth r = radius of earth and g is gravity
anonymous
  • anonymous
My answer is more of a theoretical but tangible facts are more reliable.
UnkleRhaukus
  • UnkleRhaukus
Like James says Gravity alone will not cause the satellite to fall back to earth. Any position of maximum gravitational attraction (perihelion) will also be a position of maximum velocity, Without friction the satellite will orbit indefinitely.

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