Question

use the knowledge of effect of roughness on frictional force in day to day life
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Answer 1

ANSWER:-

1.)Frictional force helps us to walk.

2.)Grooves are provided for football players to have a better grip on the ground

3.)Rough surface is provided on pen so that we can have grip on the pen and can write properly.

4.)Wheels of the car also have grooves.

HOPE IT HELPS!!..