At an altitude where the acceleration due to gravity is

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

3.0\,\text{m\,s}^{-2}

, a satellite moves in a circular orbit around Earth. Using

g = 9.8\,\text{m\,s}^{-2}

and Earth’s radius

R = 6400\,\text{km}

, determine the orbital speed of the satellite. (a)

7.9\,\text{km\,s}^{-1}

(b)

5.9\,\text{km\,s}^{-1}

(c)

11.2\,\text{km\,s}^{-1}

(d)

4.4\,\text{km\,s}^{-1}