How and why does a geostationary satellite stay above the same point on the Earths surface?

First I think it is useful to look at the definition of a geostationary satellite to find out why it appears to stay in the same place above the earths surface. It is an object that is above the equator, has a period of close to 24 hours (importantly the same duration as a day on Earth!) and moves in the direction of the rotation of the earth. As the earth rotates the satellite travels a longer distance above the earth so that it appears motionless in the sky.The satellite travels in a circular orbite. The Force towards the earth due to gravity = MeMsG/r^2 and the force due to the circular motion of the satellite = MsVs^2/r therefoe the speed of the satellite is equal to root(MeG/r).

TS
Answered by Tim S. Physics tutor

2218 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

How do you combine resistors is series and parallel?


A roller coaster has a loop, r = 20m, how fast should it travel so that riders don't fall out?


If photons are little particles emitted by atoms, where were they before they got emitted?


Describe the process of a capacitor charging.


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning