Question

Q.2. Why is friction essential? Give three example​

Answer 1

Here is your ans hope it helps

Friction is the force resisting the relative motion of solid surfaces, fluid layers and material elements sliding against each other. Friction has its uses in our daily life,and in my opinion, we can’t do anything without friction.

We can walk because of friction between surface and legs.Vehicles move and stop because of the friction of the brakes and the tires.Writing with pen requires friction and also rubbing with an eraser uses friction.Airplanes can fly and move in the air because of friction in the air called drag or air resistance.

Answer 2

We can walk because of friction between surface and legs. Vehicles move and stop because of the friction of the brakes and the tires. Writing with pen requires friction and also rubbing with an eraser uses friction. Airplanes can fly and move in the air because of friction in the air called drag or air resistance.