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

question 8

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.

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