I know that hence why I said where the Mass of the 2nd equation is the mass of the object AND rig and that friction must be included.
You didn't answer my question at all.
Hi, I will keep this short and sweet.
I am drop testing an object of complicated geometry froma set height in 10 different orientations.
Due to the complexity I decided to make a free falling rig where it slides (via roller bearings for example) when released.
Simple freefall analysis...