[Dafni]

Nick, weight is nothing else than a force pushing downwards. So if you have a force pushing upward, you can subtract this from the "weight".

I could bother you with talk about gravitational constants and difference between "mass" and "weight", but I won't. Life can be so simple, but there is always a way to make it sound complicated.

(don't want to sound braggin', but sometimes nerdiness just takes over)

Serum, I could also calculate the buoyancy of 4 Helium filled tires, but I will spare you. It's most probably not even enough to lift a small 3mm screw.

Dafnerd