1–7 A

1–7 A 3-kg plastic tank that has a volume of 0.2 m3
is filled with liquid water. Assuming the density of water is 1000
kg/m3, determine the weight of the combined system
ANS
1-7A plastic tankis filledwithwater. The weightofthe combinedsystemis tobedetermined.
Assumptions The densityof water isconstantthroughout.
Properties The densityof water isgiven tobe ρ= 1000 kg/m3.
Analysis The mass ofthe water inthe tankandthe total mass are