Question

What do mean by force of friction?

Answer 1

Explanation:

• The friction force is the force exerted by a surface as an object moves across it or makes an effort to move across it. There are at least two types of friction force - sliding and static friction. Though it is not always the case, the friction force often opposes the motion of an object.

Answer 2

➠ AnSwer :-

• The friction force is the force exerted by a surface as an object moves across it or makes an effort to move across it.
• There are at least two types of friction force - sliding and static friction.
• Though it is not always the case, the friction force often opposes the motion of an object.
• As an object falls, air resistance pushes up on the object.
• When you ride a bicycle, the contact between the wheel and the road is an example of rolling friction.
• When an object rolls over a surface, the force needed to overcome rolling friction is much less than that needed to overcome sliding friction