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Nature of Surfaces in Contact

A ball is rol...

Question

A ball is rolled down on a surface made of glass and another surface made of soil. In which case will the ball move a longer distance?

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Solution

The ball will roll more easily on the glass surface as it is more smooth and provides less friction.

On rough surfaces, there are a large number of irregularities. So the force of friction is greater if a rough surface is involved.

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