Calculate the speed (in ) of a satellite in a circular orbit above Earth's surface

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

Problem

Calculate the speed (in

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

) of a satellite in a circular orbit

400\,\text{km}

above Earth's surface. Take

G=6.67\times10^{-11}\,\text{N}\,\text{m}^2\,\text{kg}^{-2}

M_{\rm E}=6.0\times10^{24}\,\text{kg}

and

R_{\rm E}=6.4\times10^{6}\,\text{m}

. (a)

10.9

(b)

8.2

(c)

7.7

(d)

9.8