When a satellite falls into an orbit of smaller radius its speed

If a heavenly object like an asteroid or a planetoid revolving around the sun moves into an orbit of smaller radius, its speed increases.

A satellite going around the earth suddenly loses height and starts moving in an orbit of smaller radius. Then its periodic time

The period of revolution of a satellite in an orbit of radius 2R is T. What will be its period of revolution in an orbit of radius 8R ?

The period of revolution of a satellite in an orbit of radius 2R is T. What will be its period of revolution in an orbit of radius 8R ?

Orbital velocity of a satellite in its orbit (around earth) of radius r is v. It collides with another body in its orbit and comes to rest just after the collision. Taking the radius of earth as R, the speed with which it will fall on the surface of earth will be :

Orbital velocity of a satellite in its orbit (around earth) of radius r is v. It collides with another body in its orbit and comes to rest just after the collision. Taking the radius of earth as R, the speed with which it will fall on the surface of earth will be :

A: When a satellite is orbiting then no energy is required to keep moving n its orbit . R : The total mechanical energy of a satellite is conserved .

A: When a satellite is orbiting then no energy is required to keep moving n its orbit . R : The total mechanical energy of a satellite is conserved .

Assertion: The time period of revolution of a satellite close to surface of earth is smaller then that revolving away from surface of earth. Reason: The square of time period of revolution of a satellite is directely proportioanl to cube of its orbital radius.