Friction advantages and disadvantages

There are some advantage and disadvantage of Friction.

[purpose]

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[seetharam]

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[atharvasingh]

Nice teaching, Please: you talk me a methods of reducing frictoon

[tanishqaverma]

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[puneetkaur]

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[shaikkhadarbasha]

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[udaykumar-bbuj]

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[ashutoshchhaba]

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[ayodhyadeshmukh]

Can you please explain me
Friction wears out steps of staircase in building and foot over Please please

[rishisharma]

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[Money_hub]

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[SanjayDutt-df]

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