A cube of mass 0.7 kg and side length 10 cm is fully submerged in water (Ļ = 1000 kg/mĀ³) and held in place by a taut string tied to the bottom (Figure 7).
(a) Draw a free-body diagram for the cube
(b) Calculate the tension in the string (hint: the mass of a certain volume (V) of fluid can be written as ĻV; and remember what buoyant force equals)