Question

How can we increase the friction?

Answer 1

Create a “rougher” or more adhesive point of contact.
Press the two surfaces together harder.
Stop any relative motion.
Remove lubrication between the two surfaces.
Remove wheels or bearings to create sliding friction.
Increase the fluid viscosity.
Increase the viscosity of the fluid.
Increase the area exposed to air.
Use a shape with a greater drag coefficient.
Use a less streamlined body flow.
Use a less permeable material.
Increase the speed of the object.

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Answer 2

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Methods of increasing friction:-

1) By making the surface rough.

2)By removing all the lubricants.

3)By increasing the mass of the body

Methods of decreasing friction:-

1)By using lubricants.

2)By making the body streamlined

3)By using ball bearings.