Why rolling friction is small than sliding friction?

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SUMMARY

Rolling friction, often referred to as rolling resistance, is significantly smaller than sliding friction due to the energy loss associated with deformation at the contact patch of a rolling object. When a wheel rolls, it deforms at the point of contact with the surface, converting some energy into heat, which results in lower resistance compared to sliding friction. In scenarios where surfaces are nearly frictionless, such as on ice, the difference between rolling resistance and sliding friction becomes less pronounced.

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Hello, members

Why rolling friction is extremely small than sliding friction?
Could somebody explain this to me by an example?

Your help would be appreciated.

Thanks a lot.
 
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I think you mean rolling resistance, which is related to deformation at the contact patch. During deformation and recovery as the surface of a rolling object travels through the contact patch, some of the energy is converted into heat and energy is lost. The result is a resistance to rolling that slows down the speed of a rolling object absent other forces. If the surface that an object rolls on is nearly frictionless, like ice, the rolling resistance isn't extremely small compared to the non rolling sliding friction force.
 

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