Give examples to show that friction depends on the nature of two surfaces in contact.
Answers
Answer:
When we gently push abook on a table,it stops after moving for some distance because friction opposes relative motion between the surfaces of the book and the table If we apply the force along the right direction,the friction acts along that direction in both cases,the force opposes the motion of the book.
Nature of two surfaces and sliding friction
Explanation:
Friction is a phenomenon which resists motion when an object is rubbed against another. Sliding friction is between two objects when one or both are sliding against each other. Sliding friction is maximum when both the surface rubbing against each other are rough, rather than when one of them is smooth or both are smooth. So a sand paper rubbing against a glass surface will have less sliding friction compared to a sand paper rubbing against another sand paper.