How can you reduce and increase the friction? EXPLAIN IN SHORT WITH EXAMPLES
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Explanation:
when a ground or surface become slippery after rain or water splashing it is made rough by spreading sand to increase the friction. To decrease friction: (i) Friction between two surfaces can be decreased by using lubricants. (ii) Friction between two surfaces can be reduced by polishing them.
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Answer:
We can reduce friction by polishing the surface,or by using lubricant like oil or greese .
We can increase Friction by making the surface rough & by increasing the mass of object .
eg spikes are provided in the soles of shoes worn by athletes
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