Having worked as an aerospace engineer for Adam aircraft, I was involved in a lot of the stress tests. The landing gear is probably one of the most solid features on any aircraft (along with the wing). We would test the landing gear with a solid mass (Evenly distributed to match the approximate density of the aircraft), and then drop it from 20 meters(60+ feet) to test the gear at a 1200ft/min rate of descent. However, I am almost positive that any fuselage would snap at 1200ft/min, and that is probably why we always used a solid mass.