Machines

Physics (Science Paper 1) · Chapter 3 · 1. Force, Work, Power and Energy

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Your path through this chapter

1
Visual lesson Beta
1. Part 1: Mechanical advantage, efficiency and levers12 slides
2. Part 2: Pulleys12 slides
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Notes Beta
4 sections with key terms, formulas and exam tips.
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Flashcards Beta
30 cards for quick recall of key terms and facts.
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Practice
63 board-style questions with instant checks: Multiple choice 17, Short answer 13, Numerical 9, Assertion and reason 6.
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5
Chapter test Free
Short and long chapter tests in board pattern, with results and analysis.
- Chapter test (long) — Machines · 40 marks · 60 min
- Chapter test (short) — Machines · 20 marks · 30 min
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Machines as force multipliers; load, effort, mechanical advantage, velocity ratio, input, output and efficiency
Levers: principle; first, second and third class levers; MA and VR of each class
Levers in the human body
Pulley systems: single fixed, single movable, block and tackle; MA, VR and efficiency