Basic definition check: Coefficient of friction equals limiting friction divided by normal reaction. Assess the statement's correctness for dry (Coulomb) friction.

Concept/Approach

• The (static) coefficient of friction μ_s is defined at impending motion: μ_s = F_limiting / N.
• The kinetic coefficient μ_k is similarly defined with kinetic friction: μ_k = F_k / 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.