Question

what do you understand by friction explain it causes

Answer 1

Friction is the force which opposes the motion of an object/body which is in contact. The magnitude of friction depends upon the nature of the surface in contact.


Causes of friction -
When two surfaces are put in contact, the irregularities(ups/downs) of one surface get somewhat interlocked with the irregularities of the other surface. The surface should be rough not smooth. It is the opposition that we observe as the force of friction or just friction, between them. For example - A book is lying on the table. Because it has friction between two surface a table and a book. When we are writing with pen/pencil. It also has friction.


Hope it helps you
Regards@
Tanisha

Answer 2

The force acting along the two surfaces in contact which opposes the motion of one body over the other,is called the force of friction........