Advantages of friction

1. Friction
Advantages of fricto=ion

2. Advantages of Friction
 Helps in walking
 Cars brakes work
 Nails and screws work
 Making fire
 Heat production
 Sharpening objects

3. Walking
 Friction helps in walking.
 The grip between our feet and the earth enables to walk easily.
 Polished floors are hard to walk in due to lack of friction.
 When a runner steps on a banana peal falls easily due to lack of friction

4. Car brakes work
 Friction helps car brakes to work.
 When the driver applies brakes, the brake pads grab the tyres and the tyre
stops rotating.
 The grip between the tyre and the road enables the car to stop moving.
 This is why cars skid on wet roads and accidents may result.

5. Nails and screws work
 Nails and screw work because of friction.
 When the nail is hammered into the wood or the screw is driven into the
wood, the friction between them and the wood creates strong contact.
 This contact makes the attached objects to remain in position.
 Strong forces are needed to separate the objects.

6. Making fire
 In ancient times fire was made using friction.
 Friction between stones or a stick an another piece of wood created heat.
 The heat produced between the objects eventually produces fire.
 Even nowadays friction between the match-head and the scratch box
creates heat which eventually produces fire.
 The lighter also has a scratching surface which produces heat that
eventually produces fire.

7. Heat production
 Friction produces heat.
 Rubbing hands produces heat.
 The heat produces when rubbing our hands together is important.
 This heat can help to keep us warm during cold weather.

8. Sharpening objects
 Friction helps in sharpening objects.
 When a metal is rubbed against a stone or other rough surfaces friction is
created between their surfaces.
 The friction between the two surfaces make the knife sharper than before.
 Sharp knives, pangas and axes are easier to use when cutting.

9. The end
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