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Revision Notes

Gravitation

NIOS · Class 10 · Science & Tech

Quick revision notes for Gravitation — NIOS Class 10 Science & Tech. Key concepts, formulas, and definitions for last-minute revision.

91 questions35 flashcards5 concepts

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A comparison chart highlighting the key differences between mass and weight, including definitions, units, constancy, and dependence on location.
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Key Topics to Revise

1

1. Force of Gravitation and Newton's Law

  • Gravitational force exists everywhere in the universe.
  • It is always attractive.
  • Every particle in the universe attracts every other particle.
2

2. Acceleration Due to Gravity and Motion Under Gravity

  • A falling body speeds up because earth's gravity accelerates it.
  • This acceleration is called acceleration due to gravity.
  • The value of g does not depend on the mass of the falling body.
3

3. Mass and Weight

  • Mass is the quantity of matter contained in a body.
  • Mass is constant and does not change from place to place.
  • Mass is a scalar quantity and is a measure of inertia.
4

4. Free Fall and Weightlessness

  • A body falling freely under gravity is weightless.
  • Weightlessness here means the reaction force becomes zero, not that gravity has stopped.
  • A weighing machine measures the reaction force R, which equals the weight of the object.

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Full Notes

Key Concepts

Every particle in the universe attractsThe force between two particlesThe gravitational force due to earthA falling body is accelerated byFor constant g

Frequently Asked Questions

What are the important topics in Gravitation for NIOS Class 10 Science & Tech?
Key topics in Gravitation include Gravitation Concept Overview, Gravitation Chapter Overview, Gravitation - Complete Concept Map. These are the concepts NIOS Class 10 examiners draw on most — study them first, then practise related questions.
How to score full marks in Gravitation — NIOS Class 10 Science & Tech?
Understand the core concepts first, then work through the 91 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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