Question

All the surfaces have irregularities that get interlocked when two surfaces move over each other, causing friction. Attraction between atoms on the two surfaces, and the force applied, also affect friction. Then why is rolling friction less than sliding friction?

Answer 1

Answer:

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All the surfaces have irregularities that get interlocked when two surfaces move over each other, causing friction. Attraction between atoms on the two surfaces, and the force applied, also affect friction. Then why is rolling friction less than sliding friction?

Explanation:

$\huge \star \mathfrak \pink{answer}$

Rolling Friction:-

When a spherical or cylinderical object rolls on a surface, the resistance it encounters is called rolling Friction.

Sliding Friction:-

The resistance that an object encounters when it slides over a surface is called sliding friction.

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It is easier to roll an object than to slide it. Rolling friction is therefore less than sliding friction. Therefore vehicles are equipped with wheels. or luggage are equipped with wheels it is easier to roll the luggage instead of sliding.

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Answer 2

Explanation:

It is easier to roll an object than to slide it. Rolling friction is therefore less than sliding friction. Therefore vehicles are equipped with wheels. or luggage are equipped with wheels it is easier to roll the luggage instead of sliding.