An Iron Block of Density $\rho$ Fe and of Volume L3 Is Immersed in a Fluid

question 11

Multiple Choice

An iron block of density $\rho$ Fe and of volume l3 is immersed in a fluid of density $\rho$ fluid. The block hangs from a scale which reads W as the weight. The top of the block is a height h below the surface of the fluid. The correct equation for the reading of the scale is:

• A)W = (\(\rho\)Fe -\(\rho\)fluid)ghl2.
• B)W = (\(\rho\)fluid - \(\rho\)Fe)gl3.
• C)W = (\(\rho\)Fe- \(\rho\)fluid)gl3.
• D)W = (\(\rho\)Fe + \(\rho\)fluid)ghl2.
• E)W = (\(\rho\)Fe + \(\rho\)fluid)gl3.