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Why lubricants reduce friction?

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Why lubricants reduce friction?

Posted by Ishant Meena 7 years, 11 months ago

CBSE > Class 08 > Science

1 answers

Yogita Ingle 7 years, 10 months ago

When oil or grease is applied between the moving parts of a machine ,a thin layer of oil or grease is formed between the two rubbing surfaces. This layer of oil separates the two rubbing surfaces a little bit due to which their interlocking is reduced to a large extent. This friction is reduced and movement becomes smooth. When oil or grease is applied to the moving parts of a machine, then their surfaces do not rub directly against each other, they rub through a layer of oil and grease .
The substance which reduce friction are called lubricants. Oil ,grease ,graphite and fine powder are lubricants. The applying of lubricants to a machine is called lubrication.

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