Q.1.What do you mean by fluid friction?
Q.2 Why do we sprinkle powder on wooden surface of carrom board?
Q.3 Explain any three ways to reduce friction?
Answers
Answer:
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Explanation:
1)Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. ... Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other.
2)The carrom board may sometimes be very rough. Sprinkling powder on a microscopic level, the powder particles offer rolling friction to the striker because of which the striker can be used for smooth and fast play.
3)By polishing the surface, as polishing makes the surface smooth and friction can be reduced. Using lubricants such as oil or grease can reduce the friction between the surfaces. When objects are rolled over the surface, the friction between the rolled object and surface can be reduced by using ball bearings.