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Answers
a) Powder is sprinkled on the carrom board surface to smoothen the board, which inturn decreases the friction experienced by striker and coins ensuring easy movement.
b) As time passes, mechanical parts become rusty and old and are unable to function properly.
c) Friction on icy surfaces is almost negligible, making them slippery. In order to walk properly on glacier surfaces, crampons - spike like add-ons are attached to foot gear.
d) Large vehicles are generally heavy and to reduce the force (pressure) exerted on tyres, tyres are broader. Greater the surface area, lesser the pressure experienced. This prevents frequent tear and wear of tyres.
e) Kabaddi players apply soil on their hands while playing to get a better grip of their opponents - this increases friction between surfaces in contact and it relatively becomes easy to hold on to an opponent.
Answer:
1. We sprinkle powder on carrom board to make the surface of the board smooth. This reduces the friction between the surface of the carrom board, the striker and the coins. As a result, the coins and the striker can move easily on the carrom board.
2. sorry,didn't know
3. Safety. A person should never walk on a glacier alone. The risk of slipping on the ice and sliding into an open crevasse, or of breaking through and falling into a hidden crevasse is too great.
4. As we know larger the area of contact lesser the pressure. So, in order to reduce the pressure heavy vehicles have broad tyres to increase the area of contact with the ground. If the tyres are kept narrow, the earth would settle and cause differential failures in the road.
5. By rubbing their hands with soil, they make their hands rough. A rough surface has more friction which enhances their grip while holding the opponent.
Explanation:
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