Instantaneous G Force

I've seen a number of topics lately asking about how things are constructed, and it made me wonder...

In a trailer, it relies on it's springs to stop sudden jerks and dips, and in a fifth wheel, much the same, but in a camper, everything flies about with the truck box exactly. Is the difference just the G Force?

Are truck campers subject to more extreme bounces and jerks that they, and the contents within them, have to be so much better and solidly constructed to withstand those movements?

Your opinions please..s..

Doesn't it depend on the suspension of the trailer, fifth or truck? How soft, or how stout would be how much shock is transmitted to the coach during a bump. I am not sure it is about G forces as much as long term wear and tear. Maybe for a second the upward violent force could be measured by a G meter but for the daily driving with turns, bumps, dips, uneven road surfaces, starting, stopping and vibration the real wear and tear on a coach is probably all the little stuff adding up after the years.