Lesson: Orbital Speed

A satellite follows a circular orbit around Earth at a radial distance and with an orbital speed . At what radius, in terms of , would the satellite have to orbit in order to have an orbital speed of ?

Which line on the graph shows the relation between orbital speed and orbital radius for objects moving along circular orbits due to gravity?

Nilesat 201 is a communications satellite that orbits Earth at a radius of 35,800 km. What is the orbital speed of Nilesat 201? Assume that the satellite follows a circular orbit. Use a value of kg for the mass of Earth and m³/kg⋅s² for the universal gravitational constant. Give your answer to 3 significant figures.