In a gravitational field, if a body is bound with earth, then total mechanical energy is

An artificial moving in a circular orbit around the earth has total mechanical energy E_(0) . Its kinetic energy is

If a body of mass m is at a distance r in the gravitational field of a body of mass M , what will be the gravititional potential energy of the body ?

For a satellite moving in a circular orbit around the earth, the ratio of its total mechanical energy to kinetic energy

For a satellite moving in a circular orbit around the earth, the ratio of its total mechanical energy to kinetic energy

When a body falls freely towards the earth, then its total energy

When a body falls freely towards the earth, then its total energy-

Assertion : If a particle is projected from the surface of earth with velocity equal to escape velocity, then total mechanical energy is zero Reason : Total mechanical energy of any closed system is always negative.

Assertion : If a particle is projected from the surface of earth with velocity equal to escape velocity, then total mechanical energy is zero Reason : Total mechanical energy of any closed system is always negative.

Where is the gravitational field zero and where is the gravitational potential zero, in case of Earth?