Cogs in Odd Numbers

November 5, 2019

[P4 Maths Angles - S4 Maths Geometry & Trigonometry]

 

 An odd number of cogs spells trouble for motivational posters like the one featured here. 

 

When the students turn clockwise, the teachers turn counter-clockwise to match the movement and everything works perfectly...

 

... except when parents mesh with both teachers and students, causing the entire system to mesh together and lock each other up. It's funny how misshapen, yet ironically accurate that is for most educational systems. (Hopefully not in Singapore, haha!)

 

But is it possible to connect an odd number of cogs and have it spin flawlessly without jamming up? Apparently so! Watch on to find out more here:

 

Mobius-Loop Cogs

 

 

 

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