Question

workdone by gravitational force on an aeroplane flying at constant height

Answer 1

You can find the work done by gravitational force on an aeroplane at constant speed by the help of formula :-mgh. m means mass ,g means gravity and h means height .

hope it will help u!!!!!!

Answer 2

0. (Zero) because no work is done by a force which is perpendicular to direction of motion .
because W = Fs cos ( theta ) .

in this case theta = 90

so cos theta = 0