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Kepler's Second Law Of Planetary Motion Explained In Hindi

Kepler's Second Law of Planetary Motion, also known as the Law of Equal Areas, states that a line segment connecting a planet to the Sun sweeps out equal areas in equal intervals of time. This means that a planet's orbital speed is not constant.

Key Concepts
Elliptical Orbits: Planets orbit the Sun in ellipses, not perfect circles. The Sun is located at one of the two foci of the ellipse.

Varying Speed: To cover equal areas in equal time, a planet must travel faster when it is closer to the Sun and slower when it is farther away. The point where the planet is closest to the Sun is called perihelion, and the point farthest away is called aphelion.

Conservation of Angular Momentum: Kepler's Second Law is a direct consequence of the conservation of angular momentum. In a system like a planet orbiting the Sun, where the force of gravity is a central force (directed towards a single point), the angular momentum of the orbiting body remains constant.