Technically it's grp 1 elements...the answer is ribidium Rb
Static Friction, Sliding Friction, Rolling Friction, and finally Fluid Friction.
Two steps by inspection 1 qt = 0.25 gallons, 13.6 g/mL = 13.6 kg/L
0.25 gallon x 3.785411784 L/gallon x 13.6 kg/L x 1 lb/0.45359237 kg = 28.374 lb.
Hope this Helps!
