Question

Write any two methods of reduce friction
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Answer 1

Answer:

Here is the answer

Explanation:

1. Friction can be reduced by applying oil on the surfaces so that it fills the gap or irregularities within the surfaces
2. Apply oil paint on the surfaces so that it cuts off the oxygen supply to the metal surfaces

Answer 2

Answer:

Methods for Reducing Friction

☆ Moving parts of machines are covered with oil or grease, which make the effect of friction less.

☆ The surfaces are highly polished, to eliminate the irregularities thus making the surface smooth and reducing friction to a great extent.

☆ Fluid friction is reduced by using streamlined shapes in airplanes or ships.

☆ Use of wheels between surfaces moving over each other reduces friction as rolling friction is less than the sliding friction.

☆ Ball bearings are used in machines to reduce friction. These are tiny steel balls often placed between moving parts of machines which reduces friction and saves a lot of energy.