Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11
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Rolling Friction

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Rolling friction

  • Force of friction which comes into play, between two surfaces, while one is rolling over the other is called rolling friction.

  • Rolling friction is applicable for bodies whose point of contact keeps changing

  • It is the force that opposes the motion of a body which is rolling over the surface of another

  • Bowling balls, rotating wheels are examples illustrating Rolling friction

  • Rolling friction is similar to kinetic friction.

So, fr= µr N
Here µr is the coefficient of rolling friction and N is the normal force.

Coefficient of Rolling friction is lesser than that of Kinetic friction.
fr < fk < fs

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