Question

define planetary motion in brief please

Answer 1

Three laws devised by Johannes Kepler to define the mechanics of planetary motion. The first law states that planets move in an elliptical orbit, with the Sun being one focus of the ellipse. This law identifies that the distance between the Sun and Earth is constantly changing as the Earth goes around its orbit.   LOOOOO

Answer 2

Answer:

Concept of planetary motion-)

When revolving planet come in closer to the sun then its angular velocity of revolving in elliptical path increases because its moment of inertia about the axis through the sun decreases. When it goes far away from the sun its moment of inertia increases and hence angular velocity decreases so as to converse angular momentum.