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week8-3_1

# week8-3_1 - 2B-10 Archimedes II Take the 1st reading before...

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3/4/2011 Physics 214 Fall 2010 1 2B-10 Archimedes II Take the 1 st reading before put the object into large beaker where the water level is just at the overflow point. One then submerge the object into the water while the displaced water is caught in a small beaker. Take the 2 nd reading on the scale. One then put the overflowed water to the copper container, take the 3 rd reading. The 3 rd reading of the scale will A. Be the same as the 2 nd reading. B. Be the same as the 1 st reading C. Be smaller than the 1 st reading.

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3/4/2011 Physics 214 Fall 2010 2 2B-10 Archimedes II A. The block is not immersed T 1 = Mg B. The block is immersed but the liquid runs out T 2 = Mg – F B C. The displaced liquid is poured into the can T 3 = Mg – F B + W DF T 1 is found to equal T 3 which means that the bouyant force FB is equal to W DF the Weight of the displaced Fluid THE BUOYANT FORCE IS EQUAL TO THE WEIGHT OF THE FLUID DISPLACED. Use a scale to establish the relationship between the Buoyant Force on an object and the Weight of Fluid Displaced by the object T 1 Mg A T 2 Mg F B B T 3 Mg F B W DF C