Answer to Question #1842 in Mechanics | Relativity for cale

Question

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 2.04×10[sup]5[/sup] kg. answer in joules.

Answer 1

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.