Question

Name the way to increase the friction in the following surfaces:
1. Tyres of vehicles
2. Shoe soles of sportspersons​

Answer 1

Answer:

1. Tyres of vehicles

Tread does have an influence on traction in road tires. Tread, if it is not so high that it lifts the tread ground off the road (<0.2 mm), helps sink tread rubber into rough road surfaces and penetrate lubricants (water) or dirt. Peaks in the tread increase press into surface crevices and add contact points between the road and the tire, and thus increase friction.

2. Shoe soles of sportsperson

Sportsmen use shoes with spike to increase the friction between shoes and the surface. The shoes with spike do not slip while they run or play.