47. (a) When the model is suspended (in air) the reading is Fg(its true weight, neglecting any buoyant effects caused by the air). When the model is submerged in water, the reading is lessened because of the buoyant force: Fg– Fb. We denote the difference in readings as Δm. Thus, ()ggbFFFmg−−=Δwhich leads to Fb= Δmg. Since Fb= ρwgVm(the weight of water displaced by the model) we obtain 430.63776kg6.37810
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.