Newton's Law of Universal Gravitation

Front

What is Newton's Law of Universal Gravitation?

Back

It states that every point mass attracts every other point mass in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Front

What is the formula for calculating gravitational force between two objects?

Back

F = G * (m1 * m2) / r², where F is the gravitational force, G is the universal gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between their centers.

Front

What does the Universal Gravitational Constant (G) represent?

Back

It is a proportionality constant used in the equation of Newton's Law of Universal Gravitation, with a value of approximately 6.67 x 10^-11 Nm²/kg².

Front

How does distance affect gravitational force?

Back

Gravitational force decreases with the square of the distance between the centers of two masses; as distance increases, the force decreases.

Front

What is the relationship between mass and gravitational force?

Back

Gravitational force is directly proportional to the product of the masses of the two objects; as mass increases, gravitational force increases.

Front

Why do astronauts feel weightless in space?

Back

Astronauts feel weightless because they are in free fall, experiencing continuous free fall towards Earth while moving forward, creating a sensation of weightlessness.

Front

What is the difference between weight and mass?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is 'apparent weight'?

Back

Apparent weight is the weight an object seems to have when in a non-inertial frame of reference, such as in an accelerating elevator or in free fall.

Front

How does gravitational pull differ on the Moon compared to Earth?

Back

The Moon has less gravitational pull than Earth due to its smaller mass, resulting in lower weight for objects on the Moon.

Front

What happens to gravitational force if one of the masses is doubled?

Back

If one of the masses is doubled, the gravitational force between the two objects also doubles.