Question

Why is it easy to drag a mat over the floor when no weight is kept over it?​

Answer 1

Answer:

It is easy to drag a mat over the floor when no weight is kept over it because it has less friction which makes it easy to move.

Please mark it as the BRAINLIEST answer.

Answer 2

Answer:

Because the frictional force exerted by the floor on the mat is proportional to the normal force between the 2 contacting surfaces, as shown by the equation: F=(mu)N where F is force, mu is the coefficient of friction between the surfaces, and N is the normal force.

If there is an object on top of the mat, then the normal force is higher than if there is no object. This translates into an increase in frictional force.