One 71kg person steps onto the elevator in the empire state building. If the elevator lifts her mass up 320m to the lower observatory,

Question

One 71kg person steps onto the elevator in the empire state building. If the elevator lifts her mass up 320m to the lower observatory, how much potential energy has been exerted on her?

Answer 1

Gravitational potential energy (U) is the product of mass (m), acceleration of gravity (g), and elevation (h).

U = mgh

m = 71 kg

g = 9.8 m/s²

h = 320 meters

Plug in the numbers and get U in joules.