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Mechanics of Machines / September 30, 2021

What is the difference between Rolling Friction and Sliding Friction?

Following is the table with rolling friction vs sliding friction: Rolling friction Sliding friction Rolling friction takes place when an object rolls on the surface. Sliding friction takes place when two surfaces are rubbed against each other. Rolling friction takes place due to deformation of surfaces. Sliding friction takes place due to interlocking between microscopic […]

By · September 30, 2021 · 1 min read

Following is the table with rolling friction vs sliding friction:

Rolling frictionSliding friction
Rolling friction takes place when an object rolls on the surface.Sliding friction takes place when two surfaces are rubbed against each other.
Rolling friction takes place due to deformation of surfaces.Sliding friction takes place due to interlocking between microscopic surfaces.
The coefficient of rolling friction is dependent on radius of the rolling object, depth to which the object can sink, and the toughness of the surface.The coefficient of sliding friction depends on the texture of the surface and temperature to certain extent. It is independent of external factors.
Coefficient of rolling friction:Fr = μrNCoefficient of sliding friction:Fk = μrN