Flying objects pulling on Earth

[doglover9754]

So, I was thinking today about Newton's Law Of Universal Gravitation. Well, when I was thinking, I remembered that if you were to drop a rock, the Earth would be pulled the slightest bit. Right? Anyways, if that’s the case, then if there are enough birds and planes flying around in the sky, then is it possible for the Earth to eventually get pulled out of its orbit? I mean, givin enough time and the Earth being pulled a certain way, won’t it still be possible? I’m not sure. Sorry if that sounds totally random and is in the wrong category (maybe... I dunno). I may have thought that over too much... heh heh.

 

[mfb]

Anyways, if that’s the case, then if there are enough birds and planes flying around in the sky, then is it possible for the Earth to eventually get pulled out of its orbit?

No.

If you consider the system "Earth and birds/planes/...", their common center of mass does not change its position or speed, no matter what the birds/... do. If they fly up they push Earth a bit away from them, if they land Earth moves a bit in their direction again, for a net effect of exactly zero. This is a direct result of conservation of momentum.
To change Earth's orbit, you need an external force - an asteroid crashing into Earth, a rocket flying away from Earth or something similar. While these things happen: The mass of Earth is huge, and the rate of asteroids hitting Earth is tiny, and the rate of rockets leaving it is even smaller. Their effect is completely negligible.

 

[doglover9754]

No.

If you consider the system "Earth and birds/planes/...", their common center of mass does not change its position or speed, no matter what the birds/... do. If they fly up they push Earth a bit away from them, if they land Earth moves a bit in their direction again, for a net effect of exactly zero. This is a direct result of conservation of momentum.
To change Earth's orbit, you need an external force - an asteroid crashing into Earth, a rocket flying away from Earth or something similar. While these things happen: The mass of Earth is huge, and the rate of asteroids hitting Earth is tiny, and the rate of rockets leaving it is even smaller. Their effect is completely negligible.

Ohhhhh! That makes more sense! Thanks!

 

[Borek]

However, while it is not possible to change the orbit this way it is entirely possible to change the rotational speed of the Earth, just by making all birds and cars to go in one direction

(and hey, I am serious, while it is not related to birds and cars weather patterns - movements of huge amounts of water/air - are one of the reasons why the solar day length is fluctuating all the time)

 

[doglover9754]

However, while it is not possible to change the orbit this way it is entirely possible to change the rotational speed of the Earth, just by making all birds and cars to go in one direction

(and hey, I am serious, while it is not related to birds and cars weather patterns - movements of huge amounts of water/air - are one of the reasons why the solar day length is fluctuating all the time)

Ohh. Okie

 

[russ_watters]

However, while it is not possible to change the orbit this way it is entirely possible to change the rotational speed of the Earth, just by making all birds and cars to go in one direction

(and hey, I am serious, while it is not related to birds and cars weather patterns - movements of huge amounts of water/air - are one of the reasons why the solar day length is fluctuating all the time)

Real world examples where there is a measurable impact on rotation rate:
Earthquakes
Tides

 

[mfb]

However, while it is not possible to change the orbit this way it is entirely possible to change the rotational speed of the Earth, just by making all birds and cars to go in one direction

(and hey, I am serious, while it is not related to birds and cars weather patterns - movements of huge amounts of water/air - are one of the reasons why the solar day length is fluctuating all the time)

Moving them to the pole (closer to the rotation axis) to speed up rotation or closer to the equator to slow it is more effective. Large dams have a measurable effect on the length of a day due to this redistribution of a large amount of water.