Engineering
Physics
Straight Line Motion
Question

A balloon carries a total load of 185 kg at normal pressure and temperature of 27°C. What load will the balloon carry on rising to a height at which the barometric pressure is 45 cm of Hg and the temperature is –7°C. Assuming the volume constant ?

219.07 kg

181.46 kg

214.15 kg

123.54 kg

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Solution
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ρair gv = mg                                            ρair gv = m'g

ρair v = 185 kg                                       ρair(P'P×TT')V=m'

                                                              185[4576×300266]=m'

                                                              m' = 123.54 kg

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