A spaceship orbits around a planet at a height of 20 km from its surface. Assuming that only gravitational field of the planet acts on the spaceship,…

A spaceship orbits around a planet at a height of $\displaystyle 20$ km from its surface. Assuming that only gravitational field of the planet acts on the spaceship, what will be the number of complete revolutions made by the spaceship in $\displaystyle 24$ hours around the planet ? [ Given : Mass of planet $\displaystyle =8 \times 10^{22} \mathrm{~kg}$, Radius of planet $\displaystyle =2 \times 10^6 \mathrm{~m}$, Gravitational constant $\displaystyle \mathrm{G}=6.67 \times 10^{-11}$ $\displaystyle \mathrm{Nm}^2 / \mathrm{kg}^2$ ]