why is the friction less than,when there is the oil on the floor ??
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Answer:
oil is smooth and act as lubricant
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☛ Answer ☚
【 The quality responsible for oil being "slippery" is called lubricity and it is very different from viscosity- although many oils that have high lubricity are also more viscous than water.
In very general terms, lubricity has to do with the ability of the lubricant to withstand being subjected to extremely high pressures in the gaps between (usually) metal parts that are sliding against one another, without allowing those metal surfaces to actually come into physical contact on extremely small distance scales. The ideal lubricant can form an extremely thin film in those zones of highest pressure which will not rupture, while still possessing a low enough viscosity so as to allow the lubricant itself to be sheared dynamically as the metal parts are sliding.
Since these conditions are often accompanied by high temperatures, the lubricant also has to withstand high temperatures without chemically breaking down or oxidizing. It also has to be non-corrosive to the metals it must be in contact with. 】
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