Question

What are the different ways of increasing and reducing friction?

Answer 1

Answer:

REDUCING FRICTION

1. You can polish the surface.
2. You can apply a lubricant [ A lubricant is a substance (a solid or a liquid) which forms a thin layer between the two surfaces in contact.]
3. Streamline: The friction due to air is reduced by making the automobiles streamline.

INCREASE FRICTION

1. You can increase it by making the surface rough.
2. By increasing the grip of shoes, tyres.
3. In a wet area you can apply sand to increase friction.

Explanation:

Answer 2

Explanation:

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