9. FRICTION
Friction is a force that opposes the relative motion between two surfaces in contact. It plays an essential role in various daily activities and applications, as it can both facilitate movement and hinder it depending on context. Understanding the factors affecting friction, its types, and how it can be increased or reduced is crucial in numerous fields, from sports to engineering.
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What we have learnt
- Friction opposes the relative motion between two surfaces in contact.
- Friction depends on the nature and smoothness of the surfaces.
- Static friction is greater than sliding friction.
Key Concepts
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