Gravitation
Kerala Board · Class 9 · Science
Complete topic list for Gravitation in Kerala Board Class 9 Science. Key concepts, sub-topics, and what to focus on for board exams.
Topics in Gravitation
Uniform Circular Motion
- Uniform circular motion is motion with constant speed along a circular path
- Velocity changes continuously due to change in direction, even though speed remains constant
- Centripetal force is required to maintain circular motion, always directed toward the center
Universal Law of Gravitation
- Every object in the universe attracts every other object with a gravitational force
- Force is directly proportional to product of masses and inversely proportional to square of distance
- Newton derived this law by comparing moon's motion with apple's fall
Free Fall and Acceleration due to Gravity
- Free fall occurs when only gravitational force acts on an object
- All objects fall with same acceleration in absence of air resistance
- Acceleration due to gravity g = 9.8 m/s² (approximately 10 m/s²)
Weight and Weightlessness
- Weight is the force of gravitational attraction on an object by Earth
- Weight = mg, measured in Newtons (N)
- Weight varies with location due to changes in g
Key Concepts
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What are the important topics in Gravitation for Kerala Board Class 9 Science?
Gravitation covers several key topics that are frequently asked in Kerala Board Class 9 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Gravitation — Kerala Board Class 9 Science?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
Sources & Official References
- Kerala Board of Public Examinations — keralapareekshabhavan.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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