A plane of mass 300 kg and a cargo plane of mass 30000 kg; which one has more potential energy if the height of planes flying is the same?

The correct answer is: Cargo plane

Given,
mass of plane = 300kg
mass of cargo plane = 30,000kg
Let, the height of both the plane and cargo plane be h
According to the formula,
Potential energy= mass x gravitational acceleration x height.
Potential energy of plane (PE_p) = 300 x g x h
PE_p = 300gh       (equation -1)
Potential energy of cargo plane (PE_c) = 30,000 x g x h
PE_c = 30,000gh   (equation -2)
From above two equations, we can say that the potential energy of the cargo plane is more than the potential energy of the plane.