STEM Lessons for College Students

Q11) Chapter 9: Friction | Solution to Numerical Problem from Nootan Physics | Class 11

Friction; classical view and modern view of friction, static friction a self-adjusting force; limiting value; kinetic friction or sliding friction; rolling friction.
Laws of friction: Two laws of static friction; (similar) two laws of kinetic friction; coefficient of friction µs, fs(max)/N and µk = fk/N; amd graphs.
Friction as a non-conservative force; motion under friction, net force in Newton’s 2nd law is calculated including fk.
Motion along a rough inclined plane – both up and down. Pulling and pushing of a roller.
Angle of friction and angle of repose. Lubrication, use of bearings, streamlining.
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