Why do geostationary satellites all have the same orbital radius?

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SUMMARY

Geostationary satellites maintain a fixed position relative to the Earth's surface by orbiting at the same rotational speed as the Earth. This requires them to be positioned at an orbital radius of approximately 35,786 kilometers above the equator. The synchronization of their orbital period with the Earth's rotation allows them to appear stationary to an observer on the ground. The slight difference in time for a satellite's revolution compared to the Earth's rotation is negligible, typically only about a minute.

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Homework Statement



Geostationary satellites appear to remain stationary to an observer on Earth. Such satellites are placed in orbit far above the equator.

Using principles of physics, explain why such satellites all have the same orbital radius.


Homework Equations





The Attempt at a Solution



Is it because the sattilites stay on the same longitutal degree. they stay at the same spot and rotate with the earth.Thats why they seem sationary?

thanks in advance for any help
 
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bobby22 said:

Homework Statement



Geostationary satellites appear to remain stationary to an observer on Earth. Such satellites are placed in orbit far above the equator.

Using principles of physics, explain why such satellites all have the same orbital radius.


Homework Equations





The Attempt at a Solution



Is it because the sattilites stay on the same longitutal degree. they stay at the same spot and rotate with the earth.Thats why they seem sationary?

thanks in advance for any help


How long does it take a point on the equator to make one complete revolution?

How long would it take a satellite in orbit above this point to make one complete revolution?
 
they are about the same. they are only about a minute off, not a huge difference
 

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