Due to the abrasive nature of sand.
The irregular sharp surface of Sandpaper will DEFORM the surface it moves over. The Deformation increases the Coefficient of Friction between the two surfaces.
Yes, clay does have more friction than sandpaper. This is because, clay is a much heavier object/material then sandpaper, therefore if you were to drag a lump of clay on the floor and measured the friction, it would be higher then the amount of friction caused by sandpaper. If the amount of force needed to pull the clay is larger then the amount of force needed to pull the sandpaper, that means that there is a much larger amount of friction present, because the more friction there is present, the harder you would need to pull. Hope this helps.
the sandpaper has more friction
Carpet has more friction. In my science class we did an experiment and proved this true.
It is very rough. But please note that "coefficient of friction" isn't specified for a single substance. Rather, it is specified for the COMBINATION of two different surfaces. It must also be specified if some lubricant is used. For example sandpaper on sandpaper, sandpaper on glass, glass on glass (dry), glass on glass (wet), etc.
The irregular sharp surface of Sandpaper will DEFORM the surface it moves over. The Deformation increases the Coefficient of Friction between the two surfaces.
Yes, clay does have more friction than sandpaper. This is because, clay is a much heavier object/material then sandpaper, therefore if you were to drag a lump of clay on the floor and measured the friction, it would be higher then the amount of friction caused by sandpaper. If the amount of force needed to pull the clay is larger then the amount of force needed to pull the sandpaper, that means that there is a much larger amount of friction present, because the more friction there is present, the harder you would need to pull. Hope this helps.
the sandpaper has more friction
Carpet has more friction. In my science class we did an experiment and proved this true.
Ice has little friction. Sandpaper has lots of friction.
Friction is a force and is the result of any force acting on a object. It is usually associated with two sliding objects or an object sliding across a plane. When a force is exerted on an object an opposing force is created by friction. The opposing force is equal to the exerted force until the exerted force exceeds the limiting friction. The limiting friction is determined by the coefficient of friction between the two surfaces and the "weight" of the object. To put it another way, imagine pushing a sheet of sandpaper across a rubber mat, which would have a high coefficient of friction. The weight of the sandpaper is minimal so the limiting friction is rather small. Now put a 5kg weight on the sandpaper and it becomes much more difficult to get the sandpaper to slide. Max friction = μ.N μ = coefficient of friction N = Normal force("weight")
lubrication decreases friction unless you're lubricating with sandpaper.
Example of high friction is a really rough surface like sandpaper.
because of friction
All materials have a property called the coeffecient of kinetic friction. When this property is high, a higher friction force resists the motion of objects across the surface. Sandpaper has a higher coefficient of kinetic friction as compared to something like ice. This is because ice is smooth whereas the surface of sandpaper is very rough which increases the friction it causes.
carpet
sandpaper used to smooth wood