Question

State the meaning of the following terms:

i. Coefficient of Kinetic Friction

ii. Limiting Friction Force

Answer 1

1. The coefficient of kinetic friction is defined as the ratio of friction force to the normal force, μ = F /N .
2. Limiting friction force occurs when the moving force and the force opposing motion are equal; any addition to the moving force will cause slipping. The limiting frictional force is proportional to the normal reaction between the contacting surfaces and is independent of the area of contact.