Question

List the methods to increase and reduce the friction

Answer 1

friction can be increased by increasing roughness between the particles and friction can be deascreased by appplying oils,lubricants ,using ball and bearings etc

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.