Why does a body feel, weightless in an artificial satellite?

If the potential and kinetic energies of an artificial satellite revolving around the earth are U and K respectively, what will be the relation between U and K ?

What is the condition for setting up an artificial satellite at a height h from the earth’s surface? (Radius of the earth = R, mass of the earth= M).

Reason of weightlessness in a satellite is

A body is released in space from an artificial satellite moving in a fixed orbit. What happens to the body ?

What is the name of the orbit where an artificial satellite appears to be at rest from the earth ?

What is the orbital period of revolution of an artificial satellite revolving in geostionary orbit?

The ratio of the magnitudes of the kinetic energy and the potential energy of an artificial satellite revolving around the earth is

What are the values of orbital speed and time period of revolution of an artificial satellite revolving very close to the earth's surface ?

The centripetal force necessary for an artificial satellite revolving along its orbit around the earth is delivered by