KEPLER'S LAWS AND GRAVITATION

Front

What is Kepler's First Law of Planetary Motion?

Back

The orbit of a planet around the Sun is an ellipse, with the Sun at one of the two foci.

Front

What is Kepler's Second Law of Planetary Motion?

Back

A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time.

Front

What is Kepler's Third Law of Planetary Motion?

Back

The square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit.

Front

What is the law of universal gravitation?

Back

Every point mass attracts every other point mass with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

Front

What happens to gravitational force when the distance between two objects is increased?

Back

The gravitational force decreases.

Front

What is the relationship between mass and gravitational force?

Back

As the mass of one or both objects increases, the gravitational force between them increases.

Front

Who proposed the heliocentric model of the solar system?

Back

Copernicus proposed the heliocentric model, which places the Sun at the center.

Front

What is the significance of the semi-major axis in Kepler's Third Law?

Back

The semi-major axis is the average distance from the planet to the Sun and is crucial for calculating the orbital period.

Front

How does the gravitational force between two objects change if one object's mass is doubled?

Back

The gravitational force between the two objects doubles.

Front

What is the effect of halving the distance between two objects on gravitational force?

Back

The gravitational force becomes four times stronger.