Mass Related To The Circumference Of The Earth?

areg

6th May 2008 - 04:04 AM

I was looking at some problems in an old physic book and came across this question:

The French centime was defined to have a mass of 2 g of copper. Explain how the mass of this coin is related to the circumference of the earth and the physical properties of water.

Any ideas?

AlphaNumeric

6th May 2008 - 06:25 AM

France defined the SI system and a metre is one ten-millionth the distance from the N. Pole to the equator via Paris. This gives you the definition of 1cm and a cubic cm of water at 4C has a mass of 1g. Therefore a gram is defined via the properties of water and the size of the Earth.

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