Things like skis and snowboards need less friction so they can slide down the hill without stopping same with sledges
Kinetic friction is typically less than static friction because the surfaces are already in motion when kinetic friction is acting, so less force is needed to overcome the resistance between the surfaces. In contrast, static friction must be overcome to initiate motion, requiring a greater force.
Objects with smooth surfaces or lubrication between them tend to have less friction. In a vacuum or in microgravity environments, there is also less friction between objects.
The friction that occurs when an object rolls over a surface is called rolling friction, not round friction. Rolling friction is typically less than sliding friction because the object's motion is smoother and involves less resistance from the surface.
Activities like driving, exercising, and collaborating with others would benefit from less friction.
To increase friction, you can roughen the surfaces in contact or increase the force pressing the surfaces together. To decrease friction, you can make the surfaces smoother or reduce the force pressing the surfaces together.
Fluid friction.
less friction then what?
no limiting friction is not less than rolling friction
rolling friction is 1/100 less than spliding friction
No, We cannot do work on friction less surface
TIs is
No.
Tires, grips, pedals and brakes needs to have high friction, while all rotating parts needs to have low friction.
An ice cube has less friction than a sponge
than what?
You want less friction. Then you will go faster.
Rubber will have a high coefficient of friction on most surfaces, but we cannot know whether there is more or less friction unless we have something to compare it to.