Except that for a 150 lbs person to jump, he has to exert a force on the floor of the plane, thereby "adding" to its weight. See:pallidin said:I agree with everyone, but I also agree with Decker. For example, if a jumbo-jet laden with 300 standing people(150 pounds average weight each) suddenly lifted their legs off the floor, a sudden weight reduction of 45,000 lbs. would occur. Of course, when they hit the floor, an increase would be in effect.
A jump implies the application of a force to the ground or in this case the plane other than the force due to gravity.Chen said:What is the difference between "lift" and "jump"?