Static and kinetic friction, angle of repose and one-body systems on an inclined plane

What this note covers

1. Static friction adjusts up to a limiting value
2. Kinetic friction belongs in the resultant-force calculation
3. Resolve weight along and perpendicular to an incline
4. Angle of repose describes impending sliding
5. An angled pull changes contact and friction
6. Combine friction, motion and work with one consistent model
7. Worked incline case: kinetic friction and acceleration
8. Worked angled-pull threshold: the pull changes friction as well as motion

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