Dog Rocks Â® are a 100% natural, paramagnetic igneous rock mined from a quarry in Australia. They contain no chemicals and have been scientifically tested and proven safe for all pets.
In brief: Water. Free fluid is typically water. The lining of your abdominal contents are slippery (your bowel, the lining of your organs) and it's thus wet inside your abdomen. It's normal to have a little free fluid in one's pelvis, as that's where fluid tends to pool.
A free-body diagram is a cutaway view of the fluid or object in. which the effect of any surface that is cut is replaced by the forces exerted. on that surface. For example, the bottom surface could exert a shear force. (Tdx(l)) on the fluid and a pressure force (pdx(l)).