Question

Give the reason?-:
1) power is applied to carrom board second
2) oil is applied to moving part of machine.

Answer 1

1. We sprinkle powder on carom board to make the surface of the board smooth. This reduces the friction between the surface of the carom board, the striker and the coins. As a result, the coins and the striker can move easily on the carom board.
2. Lubricants like oil, grease etc. fill up the irregularities of the surfaces, making them smoother. Hence, friction decreases.