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Laws Of Friction


Law Of Friction:

(i)                Anonton’s First Law:-    According to this Law, the friction between two solids is independent of the area of contact.  For example  a Bricks slides over a flat surface than the friction will be same whether it is sliding on its end or its side or its base, because the actual area of contact is always smaller than the apparent area.

(ii)             Anonton’s Second Law:-  According to this Law, the friction force is proportional to the load exerted by one surface over the another . For example- If a brick is placed on the Top of the another brick the friction will be doubled and the another brick is placed on the second brick, than the friction will get trebled and so on.

                         f α w            

                   f= Kw                K or µ= coefficient of friction

            µ or K= f/w         f= friction, w=weight(load)

 

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