Question

Q 3) Give one situation where it is desirable to increase friction. Explain four methods by which friction between two solid surfaces in contact can be reduced.

Answer 1

Answer:

The four methods by which friction between two solid surfaces in contact can be reduced are:

• By polishing – Polishing a rough surface smoothens it and reduces the friction.
• By using rolling friction – It is easier to roll an object than to slide it. Rolling friction is therefore less than sliding friction.

Answer 2

Answer:

Hey! This is your answer

Explanation:

• The four methods by which friction between two solid surfaces in contact can be reduced are:
• By polishing – Polishing a rough surface smoothens it and reduces the friction.
• By using rolling friction – It is easier to roll an object than to slide it. Rolling friction is therefore less than sliding friction.