Question

Which of the following factors affects friction ?

• A. Nature of the surface
• B. Weight of object placed over other
• C. Amount of surface area in contact between the moving bodies
• D. Both A and B

Answer 1

Answer: (D)

Both A and B

The factors affecting friction are

• Nature of the surface : The rough surface has higher coefficient of friction resulting in higher friction and the surface with lower coefficient of friction resulting in less friction.
• Weight of the object place over other: This is the normal reaction which the surface applies on the object. For example, it is always difficult to push a heavier object than a lighter one.