Determine the orbital speed of a geostationary satellite at its orbital radius

PHYSICS · Single correct · CBSE · Physics · Gravitation · Gravitation

Problem

Determine the orbital speed of a geostationary satellite at its orbital radius. Use

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

M_{\oplus}=5.97\times10^{24}\,\text{kg}

and orbital radius

r = 4.23\times10^{7}\,\text{m}

. (a)

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

(b)

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

(c)

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

(d)

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