The density of a floating body can E
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Transcribed Image Text:The density of a floating body can be determined by tying weights to the body until both the body
and the weights are completely submerged and then weighing them separately in air, Considera
wood log that weights 1540 N in air, If it takes 34 kg oflead (p-11300 kg/m') to completely sink
the log and the lead in water, determine the average density of the log. (Ans: 835 kg/m')
The average density of icebergs is about 917 kg/m. Determine the percentage of the volume of an
iceberg submerged in seawater of density 1042 kg/m (Ans: 88%)
Balloons are often filled with helium gas because it weights only about one-seventh of what air
weights under identical conditions. The buoyaney foree will push the balloon upward. Ifthe
balloon has a diameter of 0 m and carries two people, 70 kg each, determine the acceleration of
the balloon when it is first released. Assume the density of air is 1,16 kg/m' and neglect the weight
of the ropes and cage. (Ans: 16.5 m/s).
D-10m
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