Physics · Static and Kinetic friction, laws of friction, rolling friction
The force of friction is normal reaction between the surfaces.
The force of friction is normal reaction between the surfaces.
- A. Inversely propotional to
- B. directly propotional to
- C. propotional to the square of
- D. independent of
Step-by-step solution
The force of friction is directly proportional to the normal reaction between the surfaces, as given by the laws of friction: kinetic friction f_k = μ_k N and static friction f_s ≤ μ_s N.
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