Friction

Contents / notes

• Static and dynamic friction.
• Coefficient of limiting friction and its determination.
• Advantages and disadvantages of friction.
• Reduction of friction.
• Qualitative treatment of viscosity and terminal velocity.
• Stokes' law.

Candidate objectives

• Differentiate between static and dynamic friction.
• Determine the coefficient of limiting friction.
• Compare the advantages and disadvantages of friction.
• Suggest ways of reducing friction.
• Analyse factors that affect viscosity and terminal velocity.
• Apply Stokes' law.