What is the difference between static friction, kinetic friction … - Vidyadip

Question

What is the difference between static friction, kinetic friction and rolling friction?

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Answer

Static friction : The friction force that acts on the planes in contact before relative motion occurs on them is called static friction.
kinetic friction : The force of friction for a moving object is less than that of stationary object. The limiting frictional force exerted on a moving object is called kineticfriction. Its value is always less than static friction. At the moment of commencement of motion the value of limiting friction decreases and becomes equal to kinetic friction.
Rolling friction : When an object rotates on a plane, the friction generated is called rolling friction. This friction is less than sliding friction.

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