Question

what makes the steps of foot over bridges at railway stations to wear out slowly​

Answer 1

Answer: Friction makes the steps of foot "over-bridges" at railway stations to wear out slowly. When walking in the railway station, the "friction" between the shoes and the floor help us to stop from slipping.

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Answer 2

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• Friction between the soles of the shoes and stairs leads to the worn out steps of the foot over bridges in railway stations.

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@MissTranquillity