Very bad mood :g
There are days .. so and so ... Damn ... Normal .. and also Fantastic Days ... it is life:)
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Very bad mood :g
There are days .. so and so ... Damn ... Normal .. and also Fantastic Days ... it is life:)
The 7,274 was the speed in km/h
The method AdHoc used was for a sidereal orbit, which is literally the time taken to fly through an angular distance of 2 pi radians. To reach the same position over the Earth's surface again, a synodic orbit, you would need to account for the rotation of Earth and you would need to work out how far the plane would need to travel before it has a phase difference of 2 pi radians with Earth.
The round form of the earth is kinda like a differential, considering rotation speeds at different points.
Or 2 hours half-sleep are not enough for me... xD
Earth does not undergo differential rotation. Its linear rotational speed does vary depending on your latitude, but its angular speed is constant. Differential rotation happens in fluids.
In actual fact, what am I talking about? Earth's rotation is irrelevant here! The example I gave above was from a purely mechanical point of view, assuming both bodies were being observed from an external frame of reference and the plane was moving completely independently of Earth. It's not, the plane is taking off from Earth, and so to the plane Earth might as well not be moving. The speed of the plane is relative to Earth, so the time for it to circumnavigate is simply what AdHoc said. Earth's rotation doesn't even enter into it.
Huh, oh I was just "Ontopic" with a "random thought" :P
That's just the teacher in me jumping out ;)
And for me just the petrolhead. ^^
All I did was driven by the intention to convince her being with me.
Now I do it just to make her happy.