Question

Friction does not depend on the nature of the surface in contact.

• A. True
• B. False

Answer 1

The correct option is B False

Friction: The force which resists the relative motion between two or more objects which are in contact is called friction.

1. The formula to calculate friction is given by $f=\mu N$ (where N is the normal reaction.)
2. $\mu$is the coefficient of friction and it depends on the surfaces in contact.
3. As the roughness between two surfaces increases, $\mu$ also increases.
4. And as friction is directly proportional to $\mu$, it depends on the nature of the surface.
5. Friction between two objects varies dependent on how smooth or rough those surfaces are.
6. When two smooth surfaces are in contact, the friction between them will be less whereas it increases as the roughness of a surface increases.

Hence, friction does not depend on the nature of the surface in contact is a false statement.