|F||D|=1 is the simplest form of the law of lever in equilibrium.(adsbygoogle = window.adsbygoogle || []).push({});

If |F|=|x-y| and |D|=x+y then |x^2-y^2|=1 is an real hyperbola.

In this case the interaction is repulsive.

If |F|=x-iy and |D|=x+iy then x^2+y^2=1 is an real ellipse or imaginary hyperbola.

In this case the interaction is attractive.

www.geocities.com/dedaNoe

www.geocities.com/dedaNoe/lever.pdf

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# The graphic of |F||D|=1 is hyperbola or ellipse

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