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TO REDUCE FRICTION: We can use fine powder on the carrom board to reduce friction
A lubricant such as oil and ball bearings are just (2) methods of reducing friction.
1) using a lubricant film between moving parts. 2) using low friction materials, such as Teflon.3) reducing surface roughness.
Polishing the surface or coating it with a lubricant is a way of reducing friction. To increase friction just hammer some ridges on the surface.
Lubrication will help in reducing friction in a very smooth manner. It is a process that prevents solid to solid contact which would cause friction. You would need to use a lubricant such as oil or water for lubrication.
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It depends on what you are referring to. Generally some ways of reducing friction are by using smoother surfaces, using fluids with lower viscosities, using grease or any lubricant, using rollers/wheels, using ball bearings, and with objects like cars and planes- these are usually made with streamlined shapes.
by reducing the mass you reduce the friction, and by reducing the friction reduce the fuel needed to move the car, this applies to all cars not only CO2 cars.
By reducing the contact surface area of the object and by applying the lubricant between the two contact surfaces lassens or minimizes the effect of friction.
A dolphin's shape reduces the friction it encounters when swimming greatly, but it is still exposed to friction, and as a result will slow down if it stops swimming.
By making the surface rough for increasing friction....... use any lubricating material to reduce the friction.. use rollers to decrease the friction force.. make less contact between 2 connecting materials..
Friction is related to swimming because the water is constantly working against the force of the swimmer and therefore reducing their speed and acceleration. If there was no friction then many of the world's physics would be completely different.