Why is sliding friction less than static friction?

Answer 1

Because when an object is sliding on the other the molecules donnot get time to inter lock properly

Answer 2

In sliding friction, an object is dragged over the ground, and the object is therefore moving in relation to the ground. The surface area of the underside of the object is in constant contact and motion with respect to the ground, and it is this underside surface dragging along the ground that creates the friction.

In a wheeled arrangement, the surface area of the wheel is stationary with respect to the ground - it does not drag along the ground, except in cases of skidding. As the wheel rotates, the adjacent surface area of the wheel comes into momentary stationary contact with the ground as the former surface area lifts up off the ground. Therefore, there is no dragging, and no energy lost due to friction between the wheel and the ground. In an automobile wheel, there is momentary deformation of the tire, which results in minor internal friction, but that friction is insignificant compared to the friction caused by dragging an object over the ground.

Answer 3

Rolling friction is the force of friction between two surfaces when one surface rolls over another.Sliding friction is the force of friction between two surfaces when one surface is moving on another.

Answer 4

sliding friction has 2 surfaces rubbing on each other, and the full surface acting to stop movement. rolling does not cause this rubbing. when rolling, part of the item is lifting off the surface it's rolling on while another part is coming into contact with the surface.

Answer 5

In sliding friction when the irregularities on two surface gets locked then they should glide across each other to move the object

But in rolling friction the irregularities get locked and again puled up.

So rolling friction is less

-Thunder

Answer 6

Because the Irregularities on each surface do not get time to get interlocked.

Answer 7

static is to play sliding is to push and rolling is to roll friction

Answer 8

Because when the object is rolling, lesser area of its surface is in contact with the other surface.

Answer 9

With rolling friction, the rolling object is not rubbing against anything, unlike sliding friction.