when you use matches
Decreased friction is very helpful in working machinery, because friction causes wear and tear.Mainly its very helpful in moving parts. Decreased friction is also helpful in electric cables and wires, as reduced friction reduces energy loss via heat.
hard place has more friction and smooth place has less friction
You can change friction by the material. e.g ice, low friction. carpet high friction.Or you could add a lubricant :D
On a car, friction is useful on the tyres and brakes. It is not required for the parts that rotate.
Friction can be helpful and not helpful it is not helpful when you are running because it slows you down hope that'll help!!!! ;)
Friction is helpful between car tyres and roads for grip. It is also sometimes used for heating as friction generates heat.
By using kinetic friction
no limiting friction is not less than rolling friction
less friction then what?
Helpful Friction.
when you use matches
Friction is necessary for wheels to rotate and nails to keep in walls.
Without friction, we couldn't walk or grip onto anything.
Decreased friction is very helpful in working machinery, because friction causes wear and tear.Mainly its very helpful in moving parts. Decreased friction is also helpful in electric cables and wires, as reduced friction reduces energy loss via heat.
rolling friction is 1/100 less than spliding friction
hard place has more friction and smooth place has less friction