Question

friction doesnot depends upon
area of contact? How can you
Perform an activity to prove it?



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required, procedure and conclusion
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Answer 1

Answer:

I am Sagnik saha

Explanation:

It may seem strange that friction is independent of the area of contact.The reason is that the actual area of contact on an atomic scale is a minute fraction of the total surface area.Friction occures because of the interatomic forces at these minute regions of atomic contact.The fraction of the geometric area in atomic contact is proportional to the normal force devided by the geometric area.If the normal force is doubled ,the area of atomic contact is doubled and the friction is twice as large .However ,if the geometric area is doubled while the normal force remains the same ,the fraction of area in atomic contact is halved and the actual area in atomic contact hence the fiction force remains constant.

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