A/C Speed/ "Apparent Weight"
A very idle question that probably has little relevance but, I'm hot and bored....
If, hypothetically, one were able to use the runway as a weighing device, is it fair to assume that the "apparent" weight of the aircraft will decrease in direct proportion to the speed/lift. In other words, if a fully laden 747-400 weighs X tonnes on commencement of roll, will it weigh X/2 tonnes (apparent) at exactly half rotate speed and so on?
If so, is the reverse true for landing?