Like in a lot of episodes of gossip girl they kinda take the elevator and they are in the house, but does it mean that anyone can enter? I never got it! How do penthouses work?
The formula to compute the work done from a lifting is very simpleWmgh where mmass ggravitational acceleration hheight mg600 Newton h3 m W600N 3 m1800 Joule Alsto for the work done from a crane lift the procedure is the same W4,000 N10m40,000 Joule.
I wondered that too! I asked my mom and she says that when u press the penthouse button in the elevator u need to put in a keyhope i helped! :)