A simple one is on a vehicular race track. We need good-sized tires to get "bite" or "grip" on the surface to race. The F1 circuit features cars that have wide tires. The width of a pair of the rear ones is about half the width of the car. That's where the rubber meets the road, traction, which is friction that is intentionally applied.
the advantages in increasing friction is that it slows down motion, we can walk.
The brakes in a vehicle; a parachute deployment (or any falling object which you want to slow); shoes on smooth surfaces.
by making surface more rough adding stones sand will work. take care that the floor isn't slippery
One important use for friction is to enable motion. You could not move on a frictionless surface - you would just slide to the floor and be unable to move.
energy
I think you can put down cat litter on it. Cat litter can increase the friction of the icy roadway.
Lubrication to reduce friction. To increase friction step on the brakes.
by slaiding friction increase
Yes greater the surface area coming into contact friction would increase
Turning wheels against surfaces would require some amount of friction.
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no
If you want to swim faster, then decreasing friction would help you with that - Less friction means you glide easer through the water. If you want a more efficient workout then increasing friction would help you with that. If you were to put a track suit on before entering the water you'd have to work a lot harder for each lap in the pool.
energy
I think you can put down cat litter on it. Cat litter can increase the friction of the icy roadway.
Lubrication to reduce friction. To increase friction step on the brakes.
by slaiding friction increase
Yes greater the surface area coming into contact friction would increase
We can increase friction by making the surfaces of the object rough. We can also increase friction by pressing the two objects more strongly.
You would increase friction so that you wouldn't slip, by using the brakes on your car of bike you increase friction to stop yourself. Hikers increase friction between their feet and the ground by wearing hiking shoes that grip the ground better. Tires on cars that create more friction make the car go faster, because instead of sliding, the tires grip the ground and push off.
Friction increases or decreases based on the surface changes. If a box were sliding down a smooth hill that suddenly becomes quite rough, then friction would increase. It would be the same vice versa for decreasing friction.