FrictionHard
Question
When the two surfaces are coated with the lubricant, then they will :
Options
A.slide upon each other
B.stick to each other
C.roll upon each other
D.none of these
Solution
If two surfaces are coated with lubricant then friction will be reduced so they canslide over each other if one is pushed on the other. It is friction which prevents relative motion between two surfaces.
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