ORIGINAL: kriegsmacht
Ok then how about this one.
http://i5.photobucket.com/albums/y17...x/PropKart.jpg
Yeah, I can see this one not moving. But the rocket would?
Regardless, I still think the heli in the box is supported by aerodynamic force, created by electrical energy. I will let you know what happens as soon as I locate some precision scales. Probably a few days.
Neither the rocket box nor the second box will move.
The hovering heli, inside a large, sealed cardboard box won't decrease the box's weight.
You'll only may get some fluctuations due to the air moving inside the box.
The magnitude of these fluctuations will be inversely proportional to the box size.