$A$ geostationary satellite:

$A$ satellite of mass $m$ is revolving around the Earth of mass $M$ in an orbit of radius $r$ with constant angular velocity $\omega$. The angular momentum of the satellite is ($G$ = gravitational constant).

Two satellites of equal mass are revolving around Earth in elliptical orbits of different semi-major axes. If their angular momenta about the Earth's center are in the ratio $3:4$,then the ratio of their areal velocities is ........

What is the orbital velocity of a satellite? Derive its equation.

Choose the correct statement from the following: Weightlessness of an astronaut moving in a satellite is a situation of

$A$ satellite is revolving very close to a planet of density $\rho$. The period of revolution of the satellite is