Δh= 13•4.47 m
ΔPE =mgΔh = 86.9•9.8•13•4.47=
=49487.6 J
Calculate the change in potential energy of a 86.9 kg man when he takes an elevator from the first floor to 15th floor, if the distance between floors is 4.47 m.
*This building has a thirteenth floor! Keep in mind that he stands on the floor of the top floor, not its ceiling!
1 answer
1 answer