A balloon of volume $1500\ m^{3}$ and weighing 1650 kg with all its equipment is filled with He (density$0.2\ kg\ m^{- 3}$). If the density of air be $1.3\ kgm^{- 3}$, the pull on the rope tied to the balloon will be

Question

Dr. Abubacker · Accepted Answer

(d) Pull on the rope = effective weight
$= \left\lbrack 1650 + (1500 	imes 0.2) - 1500 	imes 1.3 ightbrack\ kgf$
$= 1650 + 300 - 1950$
$= 0$

Q. A balloon of volume $1500\ m^{3}$ and weighing 1650 kg with all its equipment is filled with He (density$0.2\ kg\ m^{- 3}$). If the density of air be $1.3\ kgm^{- 3}$, the pull on the rope tied to the balloon will be

Explanation

Reviewed by Dr. Abubacker

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