Simple machines, static friction and inclined planes: MA, VR, efficiency and angle of repose

What this note covers

1. Mechanical advantage, velocity ratio and efficiency
2. Gears, chains and winches
3. Static friction and the coefficient of friction
4. Inclined planes: will it slide, and what force is needed?
5. Linking machines, friction and efficiency
6. Simple machines in a vehicle: a worked system
7. Practice set and checks

7 sections · 10 key terms & formulas · 6 common mistakes