Question

Why the friction is a necessary tool and how can we reduce friction.
Explain with suitable examples.​

Answer 1

Explanation:

by polishing the surface we can reduce friction

Answer 2

Answer:

Friction is necessary because it helps us to do some daily activities like:-

1)it helps in walking, running etc

2)it helps us to write

3)it helps a vehicle to run

4)it helps for break and tyres.

we can reduce friction by using ball bearing,by lubricating,by streamlining,by polishing,by reducing weight,by using magnetically levitating the surface.