Question

what are the different ways to increase and decrease friction​

Answer 1

Answer:

To decrease friction on any surface use lubricants

Reduce contact between the

objects

Roll instead of slid

Make streamlined bodies

To increase Friction

Increase contact

Roughen the surface (using sand

paper)

Increase fluid viscosity

Slid instead of rolling the object

Answer 2

Explanation:

The methods to increase friction are:-

1) Grooves are made in the soles of shoes to increase friction and prevent slipping.

2) Treads are made in the tyres of vehicles to increase friction and prevent skidding of vehicles on wet roads.

3) Spikes are provided in the shoes of players and athletes to increase friction and prevent slipping.

4) Gymnasts apply some coarse substance on their hands to increase friction for better grip.

5) Machine belts are made of special materials to increase friction and drive machine wheels properly.

The methods to decrease friction are:-

1) Friction can be reduced by making the surfaces smooth by polishing.

2) Friction can be reduced by applying lubricants(like oil or grease) to the rubbing surfaces.

3) Friction can be reduced by using wheels to move objects.

4) Friction can be reduced by using ball bearings between the moving parts of machines.