when two surfaces move or slide over each other, they experience:
جب دو سطحیں حرکت کرتی ہیں یا ایک دوسرے کے اوپر پھسلتی ہیں، تو وہ کس کا تجربہ کرتے ہیں
- gravitational force
- centripetal force
- electrostatic force
- frictional force
Explanation
When two surfaces slide over one another the tiny bumps push on each other.
Friction causes a force on a surface that is in the opposite direction to its motion.
Friction can be reduced by the application of lubricants
ND20-1-2023
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