4-3 Newton's Universal Law of Gravity

Front

What is Newton's Universal Law of 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 factors affect the gravitational force between two objects?

Back

The gravitational force depends on the masses of the objects and the distance between them.

Front

How does distance affect gravitational force?

Back

Gravitational force decreases as the distance between two objects increases.

Front

What is the formula for calculating gravitational force?

Back

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

Front

Who formulated the law of universal gravitation?

Back

Sir Isaac Newton.

Front

What is mass?

Back

Mass is the amount of matter in an object, typically measured in kilograms.

Front

How does mass relate to weight?

Back

Weight is the force exerted by gravity on an object, which is equal to mass times the acceleration due to gravity (W = m * g).

Front

Why do objects weigh less on the Moon than on Earth?

Back

Objects weigh less on the Moon because the Moon has less mass and therefore less gravitational pull compared to Earth.

Front

What is the gravitational constant (G)?

Back

The gravitational constant is a proportionality factor used in the equation of universal gravitation, approximately equal to 6.674 × 10^-11 N(m/kg)^2.

Front

What is the relationship between gravitational force and mass?

Back

Gravitational force is directly proportional to the product of the masses of the two objects.