As defined, friction is a force that is created when two surfaces come in contact and move across each other (Webster). But why is it so hard to move two surfaces when they are in contact. Wouldn¡¦t the force of friction make it easier? Well, if friction was going in the same direction as the object you were moving, then it would be. But force of friction actually goes in the direction opposite the direction you were pushing the object. This opposing force would make it a lot harder for surfaces to pass each other.

Encyclopedia.com defines friction as a ¡§resistance offered to the movemen

As stated in the above paragraph, friction depends on the smoothness of the surface that an object comes in contact with. The smoothness of the object is called the coefficient of friction. The coefficient of friction is obtained by dividing the value of the force necessary to move one object over another at a constant speed by the weight of the object. This coefficient of friction determines the force needed to move the object at a given speed. The higher the coefficient of friction, the more force needed to move the object. This is the friction law:

Fn= normal or perpendicular force pushing the two objects together

This law states that the force required to overcome friction for two objects or materials pushing against each other equals the coefficient of friction for the two materials times the perpendicular or normal force pushing the objects together. (Ron Kurtus ¡§Force of Friction¡¨)

Some topics in this essay:
Funk Wagnalls, Friction¡¨ Deformations, Friction¡¨ Rolling, Webster Imagine, Movement Friction, Ron Kurtus, Fn Fr=, force friction, Fr Fn, coefficient friction, force move, type friction, object friction, object moving, friction objects, surfaces contact, kurtus ¡§force friction¡¨, force object, weight object, ron kurtus ¡§force, force friction objects, force move object, friction depends smoothness,