What is example of useful friction?

Answer 1

Friction can be very helpful. It prevents things from slipping away from your hand easily. Stopping a car from crashing (breaks). Slows you down when necessary

Makes us able to stand up. Helps us sand things when doing wood projects (with sandpaper). Makes us able to carry things. You can also warm your body by friction by rubbing your hands together or on certain body parts to warm yourself up.

Answer 2

Brake pads and brake shoes used on cars, motorcycles, trucks, trains, aircraft and many other types of machinery. Sandpapers and polishes. A Van de Graaff Generator uses friction to produce high voltage static electricity.

Answer 3

Brake pads and brake shoes used on cars, motorcycles, trucks, trains, aircraft and many other types of machinery. Sandpapers and polishes. A Van de Graaff Generator uses friction to produce high voltage static electricity.

Answer 4

rubbing 2 sticks to make fire!

sprinkling sand on an icy road

wearing batting glovessprinkling sand on an icy roadapplying the brakes on a car

writing on paper with a pen.

Answer 5

hi there! not sure what you mean by "useful friction" but I'm guessing that you're asking "what examples are there where friction is useful" A simple example is that of sandpaper. Where you need to smoothen something and using a smooth (ie frictionless sandpaper) would be useless. A more day to day example would include the friction between your shoes and the ground without which you would be unable to walk with (like skating on ice). In fact, friction is required for you to grab anything (even a book which would slip off your fingers without friction). As for an explicit use of friction there's "Friction Welding" where mechanical friction is used to weld metal together. An article may be found on our friend Wikipedia. http://en.wikipedia.org/wiki/Friction_welding How this helps anybody reading! Cheers!

Answer 6

There are many examples. Friction for example prevents our shoes slipping on the pavement when we walk. It is used in vehicle's brakes. Materials like rubber are used i many ways for increasing friction - in tires, different handles for easier grip, bike brakes and so on. Friction i s also used in machines for grinding cutting and polishing.

Answer 7

Friction between your shoes and the ground stops you slipping and/or falling over.

Answer 8

Breaks on a car and the friction between the tyres and the road.

Answer 9

Brakes.