1. The gravitational force between two objects forms an action and reaction pair.
2. It is always attractive. The gravitational force is never repulsive
3. It is a central force that is gravitational force acts along the line joining the centers of the two objects.
4. It is a conservative force that is it depends upon initial and final positions, not on the path.
5. It is a long range force.
6. It is independent of the presence or absence of other objects in the neighborhood.
7. It is independent of the nature of the intervening medium between the two objects.
8. It does not depend upon the nature and the size of the two objects till their masses remains the same and the distance between their centres remains fixed.

9. It is negligible in the case of lighter bodies but it becomes appreciable in the case of heavier bodies or massive bodies like planets, stars, etc.

The above are the 9 most important properties of gravitational force. If you want to share more, please share in the comment section.

The post 9 most important Properties of Gravitational force first appeared on Winner Science.

1. We all know that earth revolves around the sun and moon around the earth. This rotation is explained or it is a proof of Newton’s law of gravitation.
2. The predictions of solar and lunar eclipses are based on this law and these predictions always came true.
3. We also have heard about tides in the oceans. These tides in the oceans are made due to the force of attraction (Newton’s law of gravitation) between the moon and ocean water.
4. The prediction about the time period of the artificial satellites and the orbits are made on the basis of Newton’s law of gravitation.

These are the examples or evidences or proof of Newton’s law of gravitation. If you know another one, please share with us.

Also read: i)Gravitation and Newton’s law of gravitation

                ii) Gravitational force and its properties

Brain Teaser:

If you understood the article, please answer “why moon rotates around the earth”?

a)      Newton’s law of gravitation

b)      Coulomb’s law

c)      Both of above

d)     None of the above

Please share your answer in the comment section

The post Examples in support of Newton’s law of gravitation first appeared on Winner Science.

Gravitational force is the weakest force among the four basic forces of nature.

Newton’s law of gravitation:

This law states that everybody in this universe attracts everybody with a force and this force is directly proportional to the product of the masses of the bodies and is inversely proportional to the square of the distance between them.

Also read: Gravitational force and its properties

Derivation or relation of Newton’s law of gravitation:

Consider two bodies A and B of masses m1 and m2. Suppose r is the distance between their centers and F be the force of attraction between them, then according to the above mentioned statement of Newton’s law

A—————————————————–B

r

F α m1m2

F α 1/r²

Thus by combing the above two

F α (m1m2)/r²

Or F = G (m1m2)/r²                                      (1)

Where G is a constant of proportionality known as Universal Gravitation constant.

Definition of Universal Gravitation constant (G):

Suppose m1 = m2 = 1

And r =1

Then equation (1) becomes

F = G

Thus Universal Gravitation constant (G) is defined as the force of attraction acting between two bodies each of unit mass and whose centers are placed unit distance apart.

This is the concept of gravitation, Newton’s law of gravitation and about the Universal Gravitation constant.

Brain Teaser:

1. Gravitational force is the weakest force. Please tell which is the strongest force among the four fundamental forces? Write your answer in comment section

The post Gravitation and Newton’s law of gravitation first appeared on Winner Science.