Diffentiate between static ;sliding and rolling sriction
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Rolling friction
Rolling friction takes place when an object rolls on the surface.
Rolling friction takes place due to the deformation of 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.
Coefficient of rolling friction:
F₁ = µ₁N
Sliding friction
Sliding friction takes place when two surfaces are rubbed against each other.
Sliding friction takes place due to interlocking between microscopic surfaces.
The coefficient of sliding friction depends on the temperature to a certain extent. It is independent of external factors.
texture of the surface and
Coefficient of
sliding friction:
Fk = µ₁N
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