Question

PHYSIC QUEST......

CAN U TELL ME ABOUT ROLLING FRICTION.....

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Answer 1

Answer:

During motion when two surfaces come in contact, the resistance generated is called friction. ... In rolling friction, the surface contact is less which results in less friction. Rolling friction is less than the sliding friction. Bearings are used to reduce friction and always work on the principle of rolling friction.

Explanation:

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Answer 2

Answer:

$answer$

Rolling resistance, sometimes called rolling friction or rolling drag, is the force resisting the motion when a body (such as a ball, tire, or wheel) rolls on a surface. It is mainly caused by non-elastic effects; that is, not all the energy needed for deformation (or movement) of the wheel, roadbed, etc., is recovered when the pressure is removed. Two forms of this are hysteresis losses (see below), and permanent (plastic) deformation of the object or the surface (e.g. soil). Another cause of rolling resistance lies in the slippage between the wheel and the surface, which dissipates energy. Note that only the last of these effects involves friction, therefore the name "rolling friction" is to an extent a misnomer.