Question

What happens to frictional force if area of contact increase explain with examples

Answer 1

friction will independent of area.
This means that even if you have two heavy objects of the same mass, where one is half as long and twice as high as the other one, they still experience the same frictional force when you drag them over the ground. This makes sense, because if the area of contact doubles, you may think that you should get twice as much friction. But when you double the length of an object, you halve the force on each square centimeter, because less weight is above it to push down. 

Answer 2

Answer:

friction is independent or does not depend on area