Physics

Problem

A communication satellite is required to complete one revolution around the Earth in

12\,\text{h}

. Neglecting atmospheric drag, estimate the distance of the satellite from the centre of the Earth (in

10^{7}\,\text{m}

, rounded to two significant figures). Use

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

and

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

. a)

3.6

2.7

1.9

4.2