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Sunday 9 June 2013

What is friction?

Friction slows an object down with the help of gravity. It is a natural force between 2 things that rub together. Lubrication is one way to stop friction from over heating the objects. To reduce lubrication you could use oil, water or a polished surface.

If you have 2 tiles and smother them with oil and flip one tile over to show the smooth side on the top and the other on the bottom, you would think that the smooth sided one would slide better than the other one but your wrong. Because of the smoothness on the tile it moves slower than the jagged surface, on the bottom of the other surface in tred ( grip ). This causes the tile to move faster because of the air gaps in the middle of the tred.

Gravity is like a gigantic magnet that pulls us down to the ground. If you were to kick a ball on the moonit would keep on going forever, if you kick a ball on earth it would be slowed down by friction and pulled down by gravity. Gravity is caused by the giant megnetic on the core in the middle of the earth. Because of the magnetic core it causes a magnetic field around the earth that pullsin from space. Usally it pulls in like particles that collide together that causes the aurora lights. Magnets can be found on the ground or on metal.

Friction is a natural form thaat slows you down while putting heat on the object that it being slowed down. To make friction you will need a soft and hard material cause heat wich makes friction. Friction happens everywhere like: on scooters, cars, bikes, matches e.c.t. Friction causes things to slow down or stop. A car that travels at 100km an hour will take 128 meters to stop if the brakes are applied.
magnetic

Although we do not see it ( friction ) it happens in our everyday life around the world. What do you think will happen if we didn't have friction?







                                                                                                                      The core of the earth!

                                                       

2 comments:

  1. Friction sounds interesting Nicholas, what else can you tell us about 'friction'?

    Mum.

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  2. This comment has been removed by the author.

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