Question

What is difference between rolling and sliding friction? Which friction is​

Answer 1

Explanation:

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 the deformation of surfaces. Sliding friction takes place due to interlocking between microscopic surfaces.

The coefficient of rolling friction is dependent on the radius of the rolling object, the 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 a certain extent. It is independent of external factors.

Coefficient of rolling friction:

Fr = μrN

Coefficient of sliding friction:

Fk = μrN

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