Question

give reasons -
1. gymnastic apply some course substance on their hands
2. handles of vehicle are provided with rubber covers
3. sides of the matchsticks are made rough
4.Kabaddi Players Apply oil on the body

Answer 1

1.to get mor friction
2.to get a better grip
3.its not necessary bit again for friction
4.to reduce friction and avoid getting caught

Answer 2

1. they apply substance to get more grip because that substance enhance the frictional force between hands and rods.

2. handles of vehicle have rubber in them to increase the grip between handle and hand.

3.because that leads to ignition because friction force produce heat that leads to burn match.

4. kabaddi player apply oil to reduce grip from their body.