Yes, I know the formula is U dotted with (r x F), but I have no conceptual understanding. Any video or text I find, just tells me how to do it…but I have no idea what I am doing. How does the dot product help with this, I just expect something… cross-product related only.
How does dotting the unit vector of a specified axis with the moment vector we calculated give us the moment around said specified axis. Do I just have a dumb understanding of the dot-product? Can someone kindly explain like I am 1.