## Killer Heels that Kill!!!

August 25, 2010

ARRRGH!!!!!!!!!!!!!!!!!!!!!!

The way we humans walk is very complex. We’ll just look at the centre of gravity.

When the centre of Gravity of any object

passes over its base it falls over.

SPLAT!!

We humans walk by falling over. We use one foot as a leaver to push our centre of gravity slightly upward and forward over our foot. If the other foot didn’t swing forward we would fall over.

SPLAT!!!

High heels make walking difficult for woman for many reasons.

They cause problems with knee joints and back pain. High heels put extra stress on the ball of the foot and also cause foot calluses from increased pressure on the front and side of the foot. Research shows stilletto wearers are walking a dangerous line ( 1o th August 2010 Herald Sun )That’s the good news.

High heels make the wearer unstable. High heels raise your Centre of Gravity and narrow your base. (See Diag: Each foot forms the hypotenuse of a triangle.) Mathspig noticed many girls in Europe – Nice, Cannes and Corsica – walking in extra high stiletto heels down very, very steep slopes and they were struggling.

The problem involves SIMPLE GEOMETRY.  Look at the high heels below.  I’ve included a range of angles as the foot is bent in a high heel shoe so I”m covering all bases. Literally.

Now put these shoes on and stand on a hill with a 30-degree slope.

You can see the resulting angles (slope plus high-heel) range from 62-degrees to 83-degrees. When you move forward down a hill in high heels you are VIRTUALLY throwing yourself off a cliff with each step.

We walk by falling a little with each footstep.  When you walk down a slope you fall sooner and further. This SOONER, FURTHER, SOONER, FURTHER… momentum gets you swinging each foot forward faster and faster to stop yourself falling.  You may end up running down the hill.

If you are walking down hill and also wearing high heels this is the point your friends yell ‘Gooood byyyyye!!!!’ as you are unstable, have less muscle control – your foot muscles have limited up-and-down movement – and you have reduced friction -the ball of the foot only – to stop yourself slipping.

Of course, walking up hill in high heels should be easy!!!!!

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## UPDATE: 26 March 2012

Here is an image I never thought I’d see.

On the 17 March 2012  (see pic above) published a report on MODEL WOBBLES ON THE CATWALK. During Fashion Week in Melbourne models, who got the wobbles had to stop walking and take off their high high-heel shoes. Why? Occupational Health and Safety Regulations. If models can’t wear high high heel shoes why would any girl? The one skill models do have is the ability to walk in high heels.

## Who is the CRAZIEST MATHS teacher in the World???

August 25, 2010

There are some pretty crazy MATHS teachers out there. Mathspig believes there should be more of them. These are the teachers who, without fear of ridicule and scorn, do silly things, sing funny songs , crack jokes  and generally act a little crazy to make maths more interesting.

Who is the craziest maths teacher in the world? You pick. Here are some of my favourites.

Mr A Geometry Rap

Calculus Teacher sings pi songs

Mr Purdy’s Parallel Line Dance

The Teacher Backstreet Boys

They could be maths teachers.. see the bloopers at the end… but  truly inspirational.

MR BROOKES