Question

Write 5 examples where friction is useful to us.

Class-8th chapter 12​

Answer 1

Answer:

• Walking –We can walk only if we apply frictional force.
• Writing – A frictional force is created when the tip of the pen comes in contact with the surface of the paper.
• Skating – A thin film of water under the blade is necessary to make the skate slide.
• Lighting a matchstick – When the head of the matchstick is rubbed against a rough surface, heat is generated and this heat converts red phosphorous to white phosphorous.
• Flight of aeroplanes- Drag is the force that opposes the forward motion of the aeroplane.

Explanation:

Hello mate hope this helped u.....

Me too in 8th std.....☺

Answer 2

Answer:

this is the answer of your question