NEB NotesNepal
Unit 7 • Class 10Science & Technology (Sci.101)

Motion and Force

चाल र बल

Newton universal law of gravitation, gravitational constant G, acceleration due to gravity g, variation of g, freefall, weightlessness.

Lesson Summary & Key Concepts

Master Newton’s Law of Gravitation, the difference between gravity and gravitation, variation of acceleration due to gravity (g), free fall, and weightlessness with complete step-by-step SEE numericals.

Textbook Exercises & Solutions

Showing 1 of 1 Solved Questions
Question 1• 4 Marks

Quick Revision Takeaways

Common Exam Pitfalls to Avoid

⚠️ Common Error: Confusing capital G (Universal Constant) with small g (Acceleration due to gravity).

✓ Correct Approach: $G$ is constant everywhere ($6.67 \times 10^{-11}$), whereas $g$ changes from place to place ($9.8 \text{ m/s}^2$ on Earth, $1.63 \text{ m/s}^2$ on Moon).

Why: $G$ is the constant of proportionality in Newton’s law, while $g$ is local acceleration.

Content Provenance & Verification
Editorial Verified & Published
Original Author / ContributorNEB Notes Science Faculty
Verified ByS. K. Poudel, SEE Science Specialist
Curriculum Versionv1.0 (CDC 2078/2080 Grid)
Last Verified Date2026-10-23
Legitimate Official Curriculum References
CDC Nepal Secondary Science & Technology Grade 10 Textbook (2079/2080)

Government of Nepal, Ministry of Education, Science and Technology

Chapter 1: Force and Motion curriculum reference.

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