CBSE Class 9 Gravitation

Scroll down for PDF

CBSE Class 9 Gravitation. Learning the important concepts is very important for every student to get better marks in examinations. The concepts should be clear which will help in faster learning. The attached concepts made as per NCERT and CBSE pattern will help the student to understand the chapter and score better marks in the examinations.

Chapter−10

Gravitation

Gravity is one of the most basic forces in the universe. It plays a fundamental role not only in the structure of our solar system but also in the way objects behave on Earth. In this section, we will talk about gravity on a small scale. We will discuss topics such as weight, free fall, and ballistics. We will learn the physics of phenomena we experience daily and take for granted

1.Gravitation

Gravitation is the force of attraction between two objects in the universe. Gravitation may be the attraction of objects by the earth. This force is proportional to the product of masses of the objects and inversely proportional to the square of the distance between them. It is  ndependent of medium.

Gravitation force=GMm/r2

Eg :- If a body is dropped from a certain height, it falls downwards due to earth’s gravity. If a body is thrown upwards, it reaches a certain height and then falls downwards due to the earth’s gravity.

• Gravitation may be the attraction between objects in outer space.

Eg :- Attraction between the earth and moon.

Attraction between the sun and planets.

GRAVITY

• A natural force that pulls all objects toward the center of the earth

• keeps the moon orbiting

• It holds stars together . . .

• And binds galaxies together for billions of years ….Prevents Planets from lo sing their atmospheres.

Test yourself:

1. When we move from the poles to the equator. Hence, the value of g decreases. Why?

2. What is the difference between gravity and gravitation?

2.Universal law of gravitation: - “Inverse square law”- All bits of matter attract all other bits of matter………..

• The universal law of gravitation states that, ‘Every object in the universe attracts every other object with a force which is directly proportional to product of the masses and inversely proportional to the square of the distance between them.’

class_9_science_concept_12

• The SI unit of G is N m2 kg-2 and its value is 6.673 x 10-11 N m2 kg-2

• The strength of the gravitational attraction between two objects depends on two factors:

Please click the link below to download pdf file for CBSE Class 9 Gravitation.

Tags: 


Click on the text For more study material for Science please click here - Science

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

How to crack a competitive examination

“How I crack a competitive examination” is a frequently asked question by today’s students. Cracking a competitive exam is a challenging task. Attaining a huge amount of study and solving several complex problems in a limited amount of time is a huge task. Competitive...

Seven Motivational tips for every student

If you’re are a student or a learner and you doesn’t feel like study then this article is going to be very important for you, Reading constantly and Staying motivated as a student is one of the most challenging tasks and barriers to educational success. Education is...

CBSE Circular Aryabhatta Ganit Challenge

For students with a keen interest in mathematics are now provided with a better opportunity to explore their knowledge. CBSE has announced to conduct an exam for the purpose of generating interest in maths among students. It is a trial to clarify the myth that...

CBSE Board Introduces Experiential Learning for Student

CBSE Academic Session 2019-20: Board Introduces Experiential Learning for Student: The education sector has grown for some new changes. As per the latest updates the Central Board of Secondary Education has been good in making all the possible efforts to improve...

Tips for exam preparation

Students often get nervous during their exams. The reason behind this nervousness is either a lack of confidence or a lack of preparedness. To overcome these fears students are advised to do their preparation in such a way that will retain their confidence. For this...

JEE Entrance Exam 2020 Dates Registration Admit Cards Exam Pattern

JEE Entrance exam is conducted for students who wish to pursue engineering in different subjects or categories like mechanical, CS, etc.. It is officially organized and conducted by NTA. Formerly it was organized by CBSE. It avails seats for students in IITs, NITs, and...

×
Studies Today