Well guys, I appreciate your collective knowledge.

However, I must admit that I fully intend to physically test it. It's just one of those things I have to see. I will probably use my electric heli, inside a large, sealed cardboard box with a plexiglass window on the side. I know most of you think this is an expedition into idiocy, but I'm going to try it. If somehow I break the laws of physics, I will make a new post, detailing the feat.

Despite all the facts and knowledge you have presented for me. My brain can't help looping it over and over. For example.. what happens in the box, stays in the box. OK but gravity is acting on the box and its contents. The source of gravity is not inside the sealed box universe, so it is not completely exclusive of the real universe. Also the battery on the helicopter is fully charged. When it begins to hover, the energy is lost in friction, heat, electrical resistance, etc. But what energy finally makes it to the spinning rotors is used to lift the heli. I can't help but thinking the energy of the battery is roundabout converted into some force which acts on the box. I just don't see why it ALL has to go straight down, making the box stay the same weight.

I could go way out on a limb. The way I understand it, a wing doesn't lift because it is blowing particles downward. (toward the bottom of the box) I think battery power is being used in a round about way to make the box lighter.

I now stand alone in the white light of ridicule and say loudly, that until I prove myself wrong. I believe the box will be lighter. And the tomcat in the plane full of chickens will make it lighter as well.

How about this... A rocket in a sealed canister, except for the blue vent holes, which only relieve gas pressure and have symmetrical placement so they offer no overall thrust on the canister while venting. Light the rocket, will the cart roll?

Have a look:

http://i5.photobucket.com/albums/y17...RocketKart.jpg