Question

A satellite does not need any energy to revolve around the earth. why?

Answer 1

A satellite does not need any energy to revolve around the earth because of the balanced centripetal and centrifugal force provided by the gravitational force.

Answer 2

Answer:

Under the influence of the earth's gravity, a man-made satellite orbits the planet. Therefore, revolving around energy doesn't use any energy.

Explanation:

Why don't satellites require energy to orbit the planet?

• The centripetal force needed to revolve around a planet is generated by the gravitational attraction between the planet and the satellite, which eliminates the need for fuel to move a satellite around it in a fixed orbit.
• Satellites, which orbit Earth, are situated close enough to the Sun to frequently harness its energy.
• These spacecraft contain solar panels that turn solar energy into the electricity needed to power them. A battery within the spaceship is charged by the electricity produced by the solar panels.
• The centripetal force needed by the satellite to move in a circular orbit is produced by the gravitational attraction between the satellite and the earth.

Thus, satellites does not need any energy to revolve around the earth.