What would be the impact on friction if a powder is sprinkled on the surface of the carrom board?
If the powder is sprinkled on the carom board:
Hence, friction reduces if power is sprinkled on the surface of the carrom board.
Why do we sprinkle fine powder on carrom board?
Fill in the blanks.
(a) Friction opposes the ________ between the surfaces in contact with each other.
(b) Friction depends on the _________ of surfaces.
(c) Friction produces _________.
(d) Sprinkling of powder on the carrom board ________ friction.
(e) Sliding friction is ________ than the static friction.
Why?(a) Machines are oiled from time to time.(b) An object thrown upwards comes down after reaching a point.(c) Powder is sprinkled on a carrom board.(d) The ramp at a railway station has a rough surface.
Give reasons why :
(a) An object thrown upwards reaches a certain height and falls down.
(b) We sprinkle talcum powder on a carrom board.
(c) The ramp on a railway station has a rough surface.
(d) We oil our bicycles regularly.