Raften wrote:
So all this seems to center around center of gravity and I can't come up with a experiment for that right now. But I did do a test that seems to call into question the weight shift idea.
I got out my trusty gram scale and a eight inch steel rod. I supported each end on the very end while level, one end on the scale and the other to a small adjustable height table from a chem lab. I recorded the weight of the scale end while level. I then elevated the table end about 15 degrees and recorded the scale end weight again.The area of contact on each end of the rod was the same for both times. Guess what, there was no weight difference. I admit this was a redneck test but it showed me something. That something seems to mean you need a much bigger angle to expect any kind of weight shift.
Still trying to get a grip with the increased tongue weight by raising a mere inch. Just does not compute for me given my redneck test.
Interesting test, I wonder how the results would be if the one set of legs wasn't on the end. After all we probably all have been on the downhill side of a box on the stairs.
The tongue weight had me rather confused as well, but as I raised and lowered the jack on the scale the weight change. My thought is that it took more force to hold it higher, but I can't be certain.
I need to reweigh my tongue since moving some things around, maybe I do some extra tongue weight tests.