Universal gravitation

Front

What is the Law of Universal Gravitation?

Back

The Law of Universal Gravitation states that every object in the universe attracts every other object 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

How does mass affect gravitational force?

Back

Gravitational force is directly proportional to the masses of the objects involved. This means that as the mass of either object increases, the gravitational force between them also increases.

Front

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

Back

When the distance between two objects is doubled, the gravitational force between them is reduced to one-fourth of its original value.

Front

What is the relationship between gravitational force and distance?

Back

Gravitational force is inversely proportional to the square of the distance between the centers of two objects. As distance increases, gravitational force decreases.

Front

True or False: Gravity only affects large objects like planets and stars.

Back

False. Gravity affects all objects with mass, regardless of their size.

Front

What is the formula for calculating gravitational force?

Back

The formula for gravitational force (F) is F = G * (m1 * m2) / r^2, where G is the gravitational constant, m1 and m2 are the masses of the objects, and r is the distance between their centers.

Front

What is gravitational constant (G)?

Back

The gravitational constant (G) is a key quantity in Newton's law of universal gravitation, approximately equal to 6.674 × 10^-11 N(m/kg)^2.

Front

If two objects attract each other with a force of 36 N, what will be the force if the distance is halved?

Back

If the distance is halved, the gravitational force will increase to 144 N, since force is inversely proportional to the square of the distance.

Front

What does it mean when we say gravitational force is a 'field force'?

Back

A field force is a force that acts at a distance without physical contact. Gravitational force is a field force because it acts between masses even when they are not touching.

Front

What is the effect of gravity on objects in free fall?

Back

In free fall, all objects accelerate towards the Earth at the same rate (approximately 9.81 m/s²), regardless of their mass.