Class 11PhysicsNewton's Laws of Motion and FrictionMix Examples-Newton's Laws of Motion and Friction
DifficultWrite the relation between the coefficient of static friction,kinetic friction,and rolling friction.
(N/A) The coefficients of friction are denoted by $\mu_s$ (static friction),$\mu_k$ (kinetic friction),and $\mu_r$ (rolling friction).
For a given pair of surfaces,the magnitude of these coefficients generally follows the inequality:
$\mu_s > \mu_k > \mu_r$.
This relationship exists because static friction must overcome the interlocking of surface irregularities at rest,kinetic friction involves sliding where the surfaces have less time to interlock,and rolling friction is significantly lower as it involves minimal deformation and contact area changes.
For a given pair of surfaces,the magnitude of these coefficients generally follows the inequality:
$\mu_s > \mu_k > \mu_r$.
This relationship exists because static friction must overcome the interlocking of surface irregularities at rest,kinetic friction involves sliding where the surfaces have less time to interlock,and rolling friction is significantly lower as it involves minimal deformation and contact area changes.
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