Value of G:
The value of G is approximately:
G = 6.674 x 10⁻¹¹ m³ kg⁻¹ s⁻²
What does it mean?
This value tells us that the gravitational force is a very weak force. It takes a lot of mass to create a noticeable gravitational attraction.
How is it used?
The gravitational constant is used in Newton's Law of Universal Gravitation, which states that:
* Every particle of matter in the universe attracts every other particle with a force that is:
* Proportional to the product of their masses
* Inversely proportional to the square of the distance between their centers
This means that the larger the masses of the objects, the stronger the gravitational force between them. And the further apart they are, the weaker the force.
Examples of using G:
* Calculating the gravitational force between the Earth and the Moon.
* Determining the acceleration due to gravity on different planets.
* Understanding the orbits of planets and satellites.
Important Note:
The value of G is a constant, meaning it doesn't change regardless of where you are in the universe. However, the gravitational force itself can vary depending on the masses and distances involved.
