Lakhmir Singh & Manjit Kaur - Science

Book: Lakhmir Singh & Manjit Kaur - Science

Chapter: 12. Friction

Subject: Physics - Class 8th

Q. No. 61 of Short Answer Type Questions

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61

Why are lubricants (oil or grease) applied to rubbing surfaces of machines?

Lubricants (oil or grease) are applied to rubbing surfaces of machines because when the parts rub against each other, heat is produced. To avoid the wearing and tearing of the machine parts, lubrication is done. Because it reduces the friction and thus less heat is produced.


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