A satellite must appear stationary over a point on the Earth's equator

PHYSICS · Subjective · CBSE · Physics · Gravitation · Gravitation

Problem

A satellite must appear stationary over a point on the Earth's equator. Given

G M_E = 3.986\times10^{14}\,\text{m}^3\text{s}^{-2}

and the required orbital period

24\,\text{h}

, calculate the orbital radius of this satellite measured from the centre of the Earth. Express your answer in kilometres.