the model airplane weighed 150 grs.
Stand on a scale. Figure out how much you weigh. Then pick up the airplane and stand on the scale. Subtract how much you originally weighed, and that is the weight of the airplane.
The same as if you were not standing on your head.
it was actually a model! a 747 airplane
A long time, like about 7-9 days. But my great granddaddie went acroos the world in 6 1/2 days!!!With nothing to eat, he was barefoot, and the only shelter he had was his sock, so beet that Forest Gump! It takes about 52 hours by plane
Either youre talking about a scale model, or a test plane
there are several kinds of model airplanes. One is the scale model, which is basically the same as the real ones only in a smaller version. The others are the silhouette type or the look alike.
One inch on the model represents 72 inches -- or six feet -- on the real McCoy. Since the miniature is two inches long, the actual airplane it represents is 12 feet long.
Assuming that the model is built of the same material it's weight will be 500,000kg/5003 = 0.004 kg. Just 4 grams.
There is a large-scale maybe l/48 scale model, in sheet metal, of the Electra -displayed under glass. there is also the full scale Lockheed Vega used in the l932 Atlantic solo crossing and several other hops, so to speak.
A scale works best when the object being weighed is stationary. Otherwise the object is shifting and can't be weighed accurately.