I'm having difficulty really grasping the gravity loading and how solidworks has the material property inputs set up.

Lets work with those fun english units shall we....

The gravity load application in solidworks for IPS is 386 in/s^2 which is correct!

The material property inputs as default for IPS has the density in lb/in^3.

Correct me if I am wrong, seems to me this density is not truly a MASS density as needed for the gravity load.  It seems to be a weight density when I apply it to my parts.  True mass density for english units generally is defined by either slugs/in^3 or lbm/in^3 (pound mass).

Can anyone prove to me that the calculations work out with using the default IPS material properties for solidworks with the gravity loads?  OR can someone help explain the appropriate usage of mass density so I can ensure accurate results?

Thanks!