Different Orbit and Critical Velocity||Near Orbit Satellite||Infinite Length Pendulum||Tunnel in Earth

Critical velocity of the orbiting satellite is, independent of

What is a High earth orbit satellite?

Assertion : Orbital velocity of a satellite is greater than its escape velocity. Reason : Orbit of a satellite is within the gravitational field of earth whereas escaping is beyond the gravitational field of earth.

Obtain an expressing for critical velocity of a satellite orbiting around the earth.

If g_(h) is the acceleration due to gravity at a height h above the earth's surface and R is the radius of the earth then, the critical velocity of a satellite revolving round the earth in a circular orbit at a height h is equal to

If v_(0) be the orbital velocity of an articial satellite orbital velocity of the same satellite orbiting at an altitude equal to earth's radius is

Statement -1 : Time period of simple pendulum in an orbiting geostationary satellite is infinite. Statement - 2 : Earth's gravitational field becomes negligible at large distance from it.

If viscosity of air is taken into account, then the orbital velocity of the satellite moving close to earth