Question

explain the methods for reducing the friction

Answer 1

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.

Answer 2

Answer:

• the Powder is sprinkled over a carrom board to decrease the friction between the board's surface and Striker. in this way the surface of carrom board become smooth .

• By making the surface smooth by polishing

• by using ball bearings between the moving part of machines