Question

1a. What 2 things in someone's day to day lives would have the LARGEST coefficient of...

1a. What 2 things in someone's day to day lives would have the LARGEST coefficient of KINETIC friction?

1b. What 2 things in someone's day to day lives would have the SMALLEST coefficient of KINETIC friction?

Both parts need around 150 words

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Answer #1

Coefficient of friction is a dimensionless scalar value. It is the ratio of force of friction between two bodies and the normal force acting between two bodies. Both coefficients of static and kinetic friction depends on the type of surfaces in contact. Usually coefficient of static friction is greater than coefficient of kinetic friction. For example glass and ice would have very low coefficient of friction but sand and tyres will have pretty high coefficient of friction. So in our day to day lives most of the rough surfaces that we come across have large values of kinetic friction. Highest kinetic friction can be experienced from a slant rough road and from ramps.

Similarly smallest values of kinetic friction exist between human body and glass of water or human body on a tiled floor.

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