does friction force depends upon area of contact?

Question

mani_jha · Answer

It's non-intuitive, but I am quite sure it doesn't. The only thing friction between two particular surfaces depends on is the normal force given by one surface on one another.
$$f = mu N$$
The pressure however depends on the area of contact.
You can check this independence of the area of contact experimentally.

anonymous · Answer

but according to modern theory of friction; friction force is said to be arise because of interlockings between two surfaces.so more interlockings more the friction force

ujjwal · Answer

principle of physics chha bhane her tyasma.. Friction majjale explain garya6.. Now my answer goes like this..
Friction doesn't depend upon area of contact as long as we consider surfaces to be ideally smooth.. But in real practice (when we take roughness into account), friction depends upon area of contact..

aravindg · Answer

does not depend

anonymous · Answer

no it doesnt depend

anonymous · Answer

does not

anonymous · Answer

http://ph.answers.yahoo.com/question/index?qid=20110504214240AAhGzRL check this one