Question

why do we need to increase friction sometimes ??​

Answer 1

Explanation:

In many situations friction needs to be increased. 1) By making the moving surfaces rough : Tyres of vehicles have designed with grooves on the surface to increase friction. A large friction provides a better grip to vehicles on the road and prevents them from skidding.

Answer 2

Your answer

-In many situations friction needs to be increased-

(1) By increasing roughness of surfaces.

(2) During rains the ground become slippery. So, sand and gravels are spread on ground due to increase in friction.

(3)You must have seen the spikes in the soles of shoes used by players and athletes. This is done only to increase friction.

(4)By making the moving surfaces rough.