Define (i) static friction (ii) sliding friction (iii) rolling friction.
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Static friction
The maximum fictional force present between any two objects when one object just tends to move or slip over the surface of the other object ,is called static friction.Static friction is a kind of starting fiction because an object just tends to start moving, it does not actually move.
Sliding friction
The frictional force present when one object moves slowly or slides over the surface of another object is known as sliding friction
Rolling friction
When an object rolls over the surface of another object ,the resistance to its motion is called rolling friction.
The maximum fictional force present between any two objects when one object just tends to move or slip over the surface of the other object ,is called static friction.Static friction is a kind of starting fiction because an object just tends to start moving, it does not actually move.
Sliding friction
The frictional force present when one object moves slowly or slides over the surface of another object is known as sliding friction
Rolling friction
When an object rolls over the surface of another object ,the resistance to its motion is called rolling friction.
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Answer:
(1) static friction = static friction is the force that a stationary object must overcome before it can start moving.
(2) sliding friction = when object slides over the surface.
(3) rolling friction = when object rolls over the surface.
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