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.