Hi, this is my first post here so mods, if my question would be better directed somewhere else, please do tell me. My knowledge of physics is only up till high school so I would greatly appreciate it if I could have your opinion on the following hypothetical situation: Is it possible to create a completely sealed room (say, 4m by 4m by 3m) with a pressure so high such that you cannot move a door which opens inwards, into the room? - Which physics theories would apply to this situation? I could only think of the combined gas law. - What is the theoretical temperature which is required to generate this pressure? Assuming that an adult would be the person to open the door? Thank you.