Question

How will you reduce friction between those machine parts rub against each other. give simplest method?

Answer 1

Simplest Methods Applicable
✓Lubricating
¶Greasing
¶Oiling
¶Powdering(Boric acid or any other)
✓Polishing
✓Smoothening or reducing irregularities
✓Using parts made up of materials which have less frictional force amongst them.
And many more possible answers but these were the simplest amongst the simplest.

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Team Kancha