When the two solid surfaces sliding over each other are free from contaminating fluid or film, the resistance encountered is called

When the two solid surfaces sliding over each other are free from cont

1.	When the two solid surfaces sliding over each other are free from contaminating fluid or film, the resistance encountered is called
A.	kinetic friction
B.	dry friction
C.	boundary lubrication
D.	none of the mentioned
Answer» C. boundary lubrication

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When the two solid surfaces sliding over each other are free from contaminating fluid or film, the resistance encountered is called

When the two solid surfaces sliding over each other are free from contaminating fluid or film, the resistance encountered is called

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