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Revision Notes

Gravitation — Revision Notes

NIOS · Class 10 · Science & Tech

Gravitation revision notes for NIOS Class 10 Science & Tech: 4 topics in quick points. Part of the NIOS Class 10 Science & Tech syllabus.

91 questions35 flashcards10 formulas & key relations5 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 Force of Gravitation and Newton's Law, Acceleration Due to Gravity and Motion Under Gravity, Mass and Weight, Free Fall and Weightlessness. Study these first, then practise questions on each for the NIOS Class 10 board exam.
How should I revise Gravitation for the NIOS Class 10 board exam?
Learn the core ideas first, then work through the 91 practice questions on Gravitation. Revise 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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