Gravitation Class 9 Notes

Gravitation Class 9 Notes

Gravitation

• According to Newton, every object in this Universe attracts every other object with a certain force. This force with which two objects attract each other is called gravitational force.
• If the masses of two bodies are small, then the gravitational force between them is very
• The gravitational force holds the Solar System
• In our daily life, we have noticed things falling freely downwards toward the earth when thrown upwards or dropped from some height.
• The fact that all bodies irrespective of their masses are accelerated towards the earth with a constant acceleration was first recognized by Galileo (1564-1642).
• The motion of celestial bodies such as the moon, earth, and planets and the attraction of the moon towards the earth and earth towards the sun is an interesting subject of study for a long time.
• Toss a stone from a great What are your observations?
• The stone, which was at first at rest, begins to move towards the ground and reaches its maximum speed right before it meets it.
• The stone is not traveling at a constant Its speed fluctuates at all times, indicating that the stone is accelerating.
• According to Newton’s second law of motion, force is necessary to cause acceleration in a body.
• The stone was not pushed or pulled in any what was the source of the force?
• Sir Isaac Newton came up with the solution to this dilemma after seeing an apple fall from a tree.
• His thesis was that the apple is attracted to the Earth, and the Earth is attracted to the apple The Earth’s force on the apple is enormous, and as a result, the apple arrives on
• The apple, on the other hand, is unable to draw the Earth since the force it exerts on it is
• As a result, we can deduce that the acceleration caused by Earth’s immense force of attraction is the cause of the stone’s acceleration.
• It is evident from the preceding example that this force of attraction ties our complicated universe together, keeps the moon revolving around the Earth, keeps all of the planets in their orbits around the Sun, and helps us walk correctly on the Earth’s surface.

The force of gravitation, or gravitation, is a form of attraction that exists between any two objects in the universe. The force of gravity or gravity is the attraction or gravitational force between Earth (or any planet) and any other material objects in the cosmos.

Gravitation Class 9 Notes

PDF DOWNLOADChapter – 3 Gravitation