Example: I design lamps and they are hanging on the ceiling. Sometimes they have complex look and it is hard to design appropriate wall holder because I don't know where to put joint. In that case I need to find center of gravity and that is not problem but the problem is to exactly determine axis of the z-vector of the gravity center.
It would be much easier to project center of the gravity to point on desired plane or to sketch.
Center of Gravity point.
I suggest new option in sketch -> Project Genter of Gravity
See image
And result is point in desired sketch
Thanks
Adam