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).

Answered by Tim S. Physics tutor

1695 Views

See similar Physics A Level tutors

Related Physics A Level answers

All answers ▸

Light with a frequency of 200nm is shone on a sodium plate with a work function of 2.28eV and electrons start escaping the surface of the plate due to the photoelectric effect. What is the maximum kinetic energy of one of these electrons in eV?


How am I going to remember all of the particles I need to know? (A-level Physics)


Calculate the threshold wavelength for a metal surface with work function of 6.2 eV.


find and symplify the following. Integrate ( 2x^5 - 1/(4x^3)- 5 )dx


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences