Why is it sometimes impossible to shut the trailer doors on sloped ground?

There are more than two types of possible slopes that a tractor-trailer could be on. The straight line between each point of contact of the ground can exist at a different slope simultaneously.

 

You keep changing your mind. One moment you want it explained to you like you are a five year old (your own words), the next moment you want a thorough scientific breakdown. Which is it? Short answer: you are a troll.

 

It's a fact the roof carries part of the load of the entire trailer.

You seem to be thinking that load bearing characteristics are a binary state. Yes the weight of the roof is primarily most concentrated on other areas of the entire structure but not all.

 

No, you are just being a troll.

 

The situation in drawing A isn't depicted with enough accuracy to identify the differences between each point of contact with the ground and the entire unit. Also you haven't provided load information such as weight and location. You also need to provide spring vs air ride suspension, as well as a list accounting for other variables that will effect the answer you want on the level of physics you ask respondents to satisfy.

 

No, you are the one who poses the asinine questions over and over because you get a rise out of watching everyone's brains explode trying to give you an acceptable answer. That's called being a troll.

I get it, it's entertaining and everything But you aren't going to get your answer.