Answer to Question #1842 in Mechanics | Relativity for cale
What is the change in the gravitational potential energy of a Boeing 767 jet as it soars from the runway up to a cruising altitude of 10.2 km? Assume its mass is a constant 2.04×105 kg. answer in joules.
The change in the gravitational potential energy would be equal to Δ P = mg Δ H = 2.04×105 [kg]*10 [ms-2]* 10.2 ×103 [m] = 20.808 × 109 J.