Why does the friction increase when two surfaces are pressed against each other harder? [3 MARKS]

Open in App

Solution

Two factors : 1.5 Marks each

Since the friction is due to the interlocking of irregularities in the two surfaces which slide with respect to each other, it is obvious that the force of friction will increase if the two surfaces are pressed harder. Another reason is that the bonding between the atoms/molecules of those two sufaces will be stronger if they are pressed harder.

One can experience it by dragging a mat when no body is sitting on it and when a person is sitting on it.

Suggest Corrections

Similar questions

Q. Is friction between two surfaces dependent on how hard they press against each other? Why?

Consider the following statements:

Statement 1: Friction is caused by the interlocking of irregularities in the two surfaces.

Statement 2: The force of friction will increase if the two surfaces are pressed hard against each other.

Choose the correct option:

Q. When two blocks of ice are pressed against each other then they stick together (coalesce) because

Q. Two lead balls, when pressed against each other, stick together because of

Q. The magnitude of friction does not depend on how hard the two surfaces are pressed together.

Join BYJU'S Learning Program