Class 9 · Science · Chapter 7

Work, Energy, and Simple Machines: complete notes

Neat, exam-ready notebook-style notes for Work, Energy, and Simple Machines, following your NCERT book. This chapter is part of the complete Complete Science Notes for Class 9 (New NCERT Exploration 2026-27).

Free: NCERT solutions for Class 9 Science Chapter 7: Work, Energy, and Simple Machines →

What you get in the pack

• For the new NCERT Science textbook Exploration, Class 9 (2026-27 edition) - all 13 chapters
• All 13 chapters complete (free updates)
• Typed concept notes with labelled diagrams, flow charts, formula boxes and comparison tables
• Every NCERT in-text and exercise question answered in exam style
• Solved numericals with step-by-step working and units
• Case-based questions, MCQs, Assertion-Reason and 1, 2, 3 and 5-mark exam-style practice with answers
• Common mistakes and a last-night summary for each chapter

All chapters in this pack

1. Exploration: Entering the World of Secondary Science
2. Cell: The Building Block of Life
3. Tissues in Action
4. Describing Motion Around Us
5. Exploring Mixtures and their Separation
6. How Forces Affect Motion
7. Work, Energy, and Simple Machines
8. Journey Inside the Atom
9. Atomic Foundations of Matter
10. Sound Waves: Characteristics and Applications
11. Reproduction: How Life Continues
12. Patterns in Life: Diversity and Classification
13. Earth as a System: Energy, Matter, and Life