Universal Law of Gravitation

1. What is the Universal Law of Gravitation?

Newton’s Law of Universal Gravitation is also called the Universal Law of Gravitation. According to this law, every particle with mass m attracts every other particle which has mass and their force of attraction is directly proportional to the product of the masses of two objects and inversely proportional to the square of the distance between these objects.

2. Is Newton’s law of Gravitation same as Universal Law of Gravitation?

Yes, Newton’s law of Gravitation is same as Universal law of Gravitation as it was given by Sir Issac Newton.

3. Why is the law of Gravitation called a Universal Law?

The law of gravitation is also called a Universal law because it is believed to work on all the objects in the universe.

4. Who proposed the Universal Law of Gravitation?

The credit for inventing the Law of Gravitation goes to the famous mathematician and scientist Sir Issac Newton.

5. What is the value of the Gravitational Constant ‘G’ on the Moon?

Gravitational Constant ‘G’ is a universal constant and hence the value of Gravitational Constant G on the moon is 6.67 × 10^-11 Nm² kg^-2 

6. Is Gravity the same everywhere on Earth?

No, the gravity is not the same everywhere on the Earth’s surface because the Earth’s surface is not uniform and its mass is not evenly distributed.

7. Why doesn’t the Moon fall into the Earth?

The moon does not fall into the Earth’s surface because it is maintained in its position by force of the Universal law of gravitation.

8. What is the Universal Gravitational Equation?

The universal gravitational equation is, F = G × (m₁ × m₂) / r² 

9. What is the value of ‘G’?

The value of G in the SI system is 6.67 × 10^-11 Nm² kg^-2 and in the CGS system is 6.67×10^-8 dyne cm² g^-2.

10. Give one example of Gravitational Force.

The movement of planets in the solar system is explained by gravitational force.

11. Why doesn’t the Moon crash into the Earth?

The interaction between velocity and gravity is responsible for maintaining the moon’s unvarying orbit around the Earth. Although the Moon appears to linger in the sky as if untouched by gravitational forces, its orbital stability is actually a direct result of the gravitational influence.

12. Is the Gravity same everywhere on Earth?

The strength of gravity exhibits variation across Earth’s surface. It is slightly more pronounced in regions with greater subterranean mass compared to those with less mass. NASA employs a pair of spacecraft to gauge these fluctuations in Earth’s gravitational field. These spacecraft are integral components of the Gravity Recovery and Climate Experiment mission which is (GRACE).

Universal Law of Gravitation or Newton’s law of Universal Gravitation as the name suggests is given by Sir Isaac Newton. This law helps us to understand the motion of very large bodies in the universe. According to this law, an attractive force always acts between two bodies that have masses. The strength of the force is directly proportional to the mass of the object and is inversely proportional to the square of the distance between them.

In this article, you are going to read about everything related to Universal Law of Gravitation including its definition, what Gravitational Law states, weight vs. Gravitational Force, etc.