Basic definition check: Coefficient of friction equals limiting friction divided by normal reaction. Assess the statement's correctness for dry (Coulomb) friction.
Mechanical Engineering
Engineering Mechanics
Difficulty: Easy
Choose an option
Answer
Correct Answer: True
Explanation
Concept/Approach
- The (static) coefficient of friction μs is defined at impending motion: μs = Flimiting / N.
- The kinetic coefficient μk is similarly defined with kinetic friction: μk = Fk / N.
Conclusion The statement matches the standard definition of coefficient of friction (limiting friction/normal reaction for static). Hence it is True.
Common pitfall Confusing the definition (a ratio) with a particular measured value; μ is material-pair dependent and dimensionless.