Questions | Energy Associated with Satellite | GRAVITATION | 11th | NEET | JEE | CBSE | ICSE

Questions | Energy Associated with Satellite | GRAVITATION | 11th | NEET | JEE | CBSE | ICSE

Types of Energy:

1. Kinetic Energy (KE): The energy of motion, given by:

KE = (1/2) × m × v^2

where m is the mass of the satellite and v is its velocity.

1. Potential Energy (PE): The energy due to its position in the gravitational field, given by:

PE = -G × M × m / r

where G is the gravitational constant, M is the mass of the Earth, m is the mass of the satellite, and r is the distance between the satellite and the Earth's center.

Total Energy:

The total energy of the satellite is the sum of its kinetic and potential energies:

Total Energy = KE + PE

Orbital Energy:

For a satellite in a circular orbit, the total energy is constant and is given by:

Orbital Energy = -G × M × m / (2 × r)

This energy is negative, indicating that the satellite is bound to the Earth.

Key Points:

- The kinetic energy of a satellite is maximum at its closest point (periapsis) and minimum at its farthest point (aphelion).
- The potential energy of a satellite is maximum at its farthest point and minimum at its closest point.
- The total energy of a satellite remains constant, but its kinetic and potential energies vary as it orbits the Earth.


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